Thank you for choosing ThePainFreeBack as your partner in back pain management. Below you will find your personalized back pain-conquering program.
Section 1 will help explain the mechanisms and systems responsible for your pain. It will also help you understand the reasoning behind the exercises and other recommendations we will make.
Section 2 will help you determine your correct exercise “dosage”. Just like with medication, it’s not only about having the right pill but taking the right amount. This section will also help you adapt your program as your back pain changes and gets better.
Section 3 is your actual exercise program. With each exercise, you will find a text description of how to properly perform the motions involved as well as picture and video demonstrations.
Section 4 will include practical recommendations on how to avoid aggravating your back and how to better manage the pain in your day-to-day life.
Section 5 will explain the connection between your brain and back pain, as well as how you can disrupt the “Pain Cycle”.
Section 1: Why does my back hurt?
Before we begin, it is important to remember that there are many factors that contribute to back pain and that mechanical changes such as the ones described below do not define your back. Even an MRI or X-ray would not be able to entirely capture what you are experiencing and are not necessary for the treatment of the vast majority of back pain. Movement and how you feel when you move are the keys to understanding your back pain.
With that said, understanding the anatomy and mechanisms of your back can be helpful in reducing pain-related fear and promoting healthier habits.
Your Sacroiliac Joint (SI joint) is an important connection between your spine and your hips. It’s the joint that links the triangular bone at the base of your spine, called the sacrum, to the pelvic bone, known as the ileum. This joint plays a crucial role in transferring the weight and motion of your body to your legs. The SI joint can become irritated if it experiences an increase in pressure or a reduction in stability. In your situation, it appears there is an increase in pressure at your SI joint.
However, many daily tasks will naturally increase the pressure at your SI joint. Does this mean these tasks and activities have to be avoided completely forever? While you should try and avoid increasing SI joint pressure until your pain subsides, loading the SI joint is thankfully not something to be afraid of. The SI joint is held together by very strong ligaments and is designed to handle all sorts of forces. The amount of force that is transferred through the SI joint can also be reduced or increased through the use of several muscles. In particular your glutes and adductor muscles.
Accordingly, you can overcome your back pain by strengthening muscles that reduce pressure at the SI joint and by stretching muscles that increase pressure.
Section 2: Exercise Dosage
The recommended amount of exercise will be described using 3 main terms: Volume, Frequency, and Intensity.
Volume refers to how much of each individual exercise you should perform in a single session. Volume is measured in "repetitions" or "time". If an exercise is measured in repetitions you repeat the movement that many times. If an exercise is measured in time, you hold the position for that amount of time.
Repetitions and time are given in "sets". A set can be thought of as a group of repetitions. A set of repetitions should always be separated by a short break. We recommend starting with breaks that are 30 -60 seconds long.
So for example, if you are doing 2 sets of 10 repetitions, you perform the exercise 10 times, rest for 1 minute and then do another 10 repetitions for a total of 20 repetitions
Frequency refers to how many times you should complete an exercise at the recommended volume in a given amount of time. For example, you may be asked to perform the exercise at a frequency of 2 times per day, once in the morning and once before bed. If the recommended volume for this exercise was 2 sets of 10, you would do 2 sets of 10 in the morning and another 2 sets of 10 before bed.
Intensity describes what you should feel during an exercise. During some exercises you should feel your muscles get tired, in others you should feel more of a stretch. The intensity will help you know when you are doing the exercise right and how much you should be pushing yourself.
In order to get the most out of exercise you should challenge yourself, but more isn’t always better.
Before you are active or attempt an exercise you should ask yourself: “On a scale of 1-10, how much discomfort do I feel?”
A score of 10 means you are experiencing the most discomfort you can imagine and a score of 1 means you are experiencing very little discomfort. There is no right or wrong answer to this question, what 10/10 discomfort feels like is totally up to you.
The answer to this question will help you determine if you should be doing less, or doing more of the activity/ exercise in question.
Exercise and activity should not increase pain and or discomfort by more than 2 points. This increase should also not last longer than 1 minute after completing an exercise.
If your pain increases by more than 1-2 points and/ or lasts longer than 1 minute following the exercise or activity, you have pushed too far.
If you experience an increase in pain of more than 2 points or if the increase lasts longer than a minute you should rest or attempt an exercise you know makes your back pain feel better.
Once your pain has returned to the original level you may perform this exercise again but you should modify the painful exercise by reducing the number of repetitions to avoid a similar increase in pain.
If you cannot perform more than 3 repetitions without increasing your pain, reduce the exercise intensity. Most often this will mean not moving as far in each repetition.
If you cannot find a level that feels appropriate to you after modifying the volume, and intensity stop the exercise entirely and focus on the ones you can do. Avoid the exercise for 1 week, then attempt to reintroduce the painful exercise gradually still following the rules above.
If you get relief from your pain with one of the exercises, feel free to perform that exercise as many times a day with as much or as little rest in between as you see fit. It is very hard to "overdo it" with such an exercise, but if at some point an exercise that once felt good becomes painful, return to doing an amount that felt good.
If you are able to perform an exercise with ease at the recommended amount, you should attempt to advance to the second level of that exercise. But be sure to wait at least 24 hours before making any changes. Your pain may not increase until some time after an exercise is complete.
If you get to the third level of the exercise and still find it to be easy, you should increase the volume of this exercise by doing more repetitions or sets. If you are performing more than 20 repetitions or holding a position for longer than 2 minutes and you still do not feel like you are being challenged, you should now increase the frequency.
If you increase the volume and frequency at the hardest level of an exercise and still don't find the exercise challenging, you should continue it to whatever level you have the time and energy for as it will still be beneficial. However, focus on the exercises and activities you do find challenging as well as the ones that make you feel less discomfort.
Other things to consider…
Each recommended exercise has 3 alternative versions of varying difficulty so you can increase the difficulty of your program as your back gets better. Level 1 will typically be the easiest version of the exercise. However, you may actually find it to be more challenging than the other levels. If this is the case, stick with the level you find most challenging at the time.
Do not feel the need to progress the exercises all at once, it is okay to be doing level 1 of a certain exercise and level 3 of another.
You may also need to perform a specific level due to a limitation other than your back. For example, if you cannot perform and exercise with proper form and without pain due to a shoulder injury, choose the version you can do properly without aggravating your shoulder.
Lastly, some exercises will involve only one side of your body. On occasion, you will need to repeat the exercise on both sides, other times you will only perform the exercise on one side. The side you should perform the exercise on will be explained in the exercise description.
Volume refers to how much of each individual exercise you should perform in a single session. Volume is measured in “repetitions” or “time“. If an exercise is measured in repetitions you repeat the movement that many times. If an exercise is measured in time, you hold the position for that amount of time.
Repetitions and time are given in “sets“. A set can be thought of as a group of repetitions. A set of repetitions should always be separated by a short break. We recommend starting with 1-minute long breaks.
So for example, if you are doing 2 sets of 10 repetitions, you perform the exercise 10 times, rest for 1 minute and then do another 10 repetitions for a total of 20 repetitions.
2 Sets of 10 Repetitions = 20 Total Repetitions, Performed 10 at a time, Seperated by a Break.
Frequency refers to how many times you should complete an exercise at the recommended volume in a given amount of time. For example, you may be asked to perform the exercise 2 times per day, once in the morning and once before bed. If the recommended volume for this exercise was 2 sets of 10, you would do 20 repetitions in the morning separated by a minute break, and 20 repetitions before bed separated by a minute break for a total of 40 repetitions that day.
Intensity refers to how hard you should push yourself during the exercise and what you can expect to feel. This will not be given in a number format like frequency and volume, rather a simple one or two-sentence explanation will be provided.
The recomendations given are only a baseline, you may need to do more or less depending on how your back is feeling.
We have included 3 variations of each exercise with different levels of difficulty. Level 1 is considered the easiest, Level 2 is considered intermediate, and Level 3 is considered the most challenging. You should always begin with the Level 1 variation and wait at least 24 hours before progressing to the next level. Similarly, you should not jump from Level 1 to Level 3, without at least attempting Level 2.
If you are able to perform an exercise with ease at the recommended amount, you should attempt to advance to the second level of that exercise.
If you get to the third level of the exercise and still find it to be easy, you should then increase the volume at which you do the exercise (do it more times during a day, or week). If this still does not feel like it is challenging, you should now increase the frequency.
While Level 1 will typically be the easiest version of the exercise, you may actually find it to be more challenging than the other levels. If this is the case, stick with the level you find most challenging. You may also need to perform a specific variation due to a limitation other than your back. For example, if you cannot perform and exercise with proper form and without pain due to a shoulder injury, choose the version you can do properly without aggravating your shoulder.
Lastly, it is unlikely you will progress through each exercise at the same rate. It is okay to be doing Level 1 of a certain exercise and Level 3 of another.
In order to get the most out of exercise you should challenge yourself, but more isn’t always better.
The exercises you have been provided with were chosen as they are the most likely to fix the cause of your back pain and feel good. However, when performing an exercise, it is normal for the pain to increase a small amount. But what is normal and what isn’t?
To avoid pushing too far, ask yourself this question before you begin an exercise: “On a scale of 1-10, with 10 being the worst pain I can imagine, how much does my back hurt?”. There is no right or wrong answer to this question, what 10/10 pain feels like is totally up to you.
Pain should never increase by more than 2 points or last longer than 1 minute after completing an exercise.
Your pain should never increase by more than 2 points and this increase should not last longer than 1 minute after completing the exercise. If you experience pain greater than this, you have pushed too hard.
If you complete an exercise and it is not challenging and pain-free, wait at least 24 hours before making any changes. Your pain may not increase until sometime after an exercise is complete.
If your pain increases by more than 2 points, the first thing you should try is to modify the painful exercise by not moving as far into a stretch or going through less range of motion during a repetition. If you cannot perform the exercise to any extent without triggering pain, attempt an easier version of the exercise. If this still triggers pain, reduce the volume. If reducing the volume doesn’t help, reduce the frequency. If you cannot find a level that feels appropriate to you, stop the exercise and focus on the ones you can do for 1 week, then attempt to reintroduce the painful exercise.
How long you will need to do the exercises before your pain goes away varies from person to person and is impossible to determine with certainty. On average
Some exercises will involve only one side of your body. On occasion, you will need to repeat the exercise on both sides, other times you will only perform the exercise on one side. The side you should perform the exercise on will be explained in the exercise description.
Section 3: Exerise Program
We have recommended 4 different exercises for you. Each exercise comes with a text description of the proper technique, as well as a picture and video demonstration. To view the video demonstration, simply click the picture of the exercise and a new tab will open. You can switch between difficulty levels by clicking the buttons above the included picture. The recommended Frequency, Volume, and Intensity will be provided below each exercise.
Do not attempt the exercises before completing section 2.
Exercise Description: To perform the "Piriformis Stretch" exercise begin by lying face up on a comfortable surface, this might be your bed or a yoga mat on the floor. Bring one knee upwards until your hip is bent about 90 degrees. Then reach your opposite hand towards your knee, grab the knee and pull it across your body. You should feel a stretch in the buttock area. Hold this position for the recommended time or the amount of time you have determined to be optimal. Then repeat on the other side.
Frequency: 2-3 Times per day
Volume: 3 sets of 30 seconds
Intensity: You should feel a comfortable stretch in the hip area of the leg you are lifting.
Exercise Description: To perform the "Figure 4" exercise, begin by lying face up on a comfortable surface, this might be your bed or a yoga mat on the floor. Bend your knees until your feet are flat, shoulder width apart. Cross one leg over the other so that your ankle is on the thigh of the other leg. Warp your hands around the leg still in contact with the floor and pull your thigh upwards until you feel a stretch in the buttock area of the other leg. Hold this position for the recommended time or the amount of time you have determined to be optimal. Then repeat on the other side.
Frequency: 2-3 Times per day
Volume: 3 sets of 30 seconds
Intensity: You should feel a comfortable stretch in the back of your leg on the side you are lifting.
Exercise Description: To perform the "Pigeon" exercise, begin in a kneeling position on a comfortable surface, this might be your bed or a yoga mat on the floor. Bring one leg forward and rotate from your hip so that the outside of your leg is on the surface. Lean forward until you feel a stretch in the buttock area of the rotated leg. You may need to shuffle the other leg backwards to feel the stretch. Hold this position for the recommended time or the amount of time you have determined to be optimal. Then repeat on the other side. You should feel a stretch in the buttock area of the front leg.
Frequency: 2-3 Times per day
Volume: 3 sets of 30 seconds
Intensity: You should feel a comfortable stretch in the leg in contact with the ground.
Exercise Description: To perform the "Transverse Abdominis Activation" exercise begin by lying face up on a comfortable surface, this might be your bed or a yoga mat on the floor, whatever works best for you. Squeeze your stomach muscles in a way that causes your lower back to flatten against the surface you are laying on. It may be helpful to think about pulling your belly button towards your spine or to think about bracing your stomach for impact. Practice holding this contraction while still taking normal controlled breaths. Once you feel you can do this well, raise your arms overhead. Raising your arms will make holding this contraction a little harder. Do not allow your core to relax as you raise your arms. Hold your arms overhead for the recommended time or the amount of time you have determined to be optimal.
Frequency: 1 time per day
Volume: 3 sets of 30 seconds
Intensity: This exercise should cause your core muscles to "tighten". It should take a fair amount of effort to maintain this tightness as you raise your arms.
Exercise Description: To perform the “Dead Bug" exercise begin by lying face up on a comfortable surface, this might be your bed or a yoga mat on the floor, whatever works best for you. Squeeze your stomach muscles in a way that causes your lower back to flatten against the surface you are laying on. It may be helpful to think about pulling your belly button towards your spine or to think about bracing your stomach for impact. Raise your arms and legs so that your arms are straight out in front of you and your knees and hips are both bent to 90 degrees. While holding the contraction of your stomach muscles, straighten one leg and raise the opposite arm over your head, hold this position for 3 seconds, then return to the starting position. Make sure to take normal controlled breaths throughout the exercise. Repeat this motion the recommended amount of times or for the number of repetitions you have determined to be optimal.
Frequency: 1 time per day
Volume: 3 sets of 10 repetitions
Intensity: This exercise should cause your core muscles to "tighten". It should take a fair amount of effort to maintain this tightness as you raise your arms and move your legs.
Exercise Description: To perform the "Plank" exercise, begin by laying face down on a soft but firm surface like a yoga mat or carpeted floor. Prop yourself up onto your forearms and then lift your hips off the ground until your spine is in a neutral position. Hold this position for the recommended time or the amount of time you have determined to be optimal.
Frequency: 1 time per day
Volume: 3 sets of 15 - 30 seconds
Intensity: This exercise should cause your core muscles to "tighten". It should take a substantial amount of effort to maintain this tightness as you keep your hips from falling toward the ground.
Exercise Description: To perform the "Raised Hip Stretch" exercise, begin by placing one leg on a raised surface, this might be on a staircase or a chair. Place one leg on the raised object and begin to lean towards that leg while allowing the other leg to extend behind you. You should feel a strong but comfortable stretch in the lower leg. Hold this position for the recommended amount of time of the amount of time you have determined to be optimal.
The higher the object you use the harder the exercise becomes, so find something the right height for you.
Frequency: 1 time per day
Volume: 3 sets of 30 seconds
Intensity: You should feel a stretch in the front of the leg still on the ground and in the back of the leg on the raised surface.
Exercise Description:
To perform the "Hip Flexor Stretch" exercise, begin in a kneeling lunge position on a firm surface. You may want to be next to a stable object to help with balance and have a pillow under your knee for comfort. Slowly lean forward while not allowing your back to arch. You can prevent your lower back from arching by squeezing your buttock muscles, or by “tilting your hips upwards”. You should feel a stretch in the front of the leg with the knee on the ground. You should not have to lunge very far to feel this stretch. If you find yourself leaning quite far you are likely arching from your lower back. Hold this position for the recommended amount of time of the amount of time you have determined to be optimal.
Frequency: 1 time per day
Volume: 3 sets of 30 seconds
Intensity: You should feel a stretch in the front of the leg with the knee touching the ground.
Exercise Description: To perform the "Lunge" exercise. Begin in a kneeling lunge position with both knees bent to 90 degrees. Slowly lift your knees off the ground while keeping your back upright. You may want to hold on to a stable object to help with balance. Hold this position for 3 seconds and then return to the starting position. Repeat this motion for the recommended amount of repetitions or as many times as you have determined to be optimal. Then switch legs and perform the exercise again.
Frequency: 1 time per day
Volume: 3 sets of 15 - 30 seconds
Intensity: You should feel a significant muscualr effort in both your legs as you lift and lower your body weight.
Exercise Description: To perform the "Straight Leg Raise" exercise begin by lying face up on a comfortable surface, this might be your bed or a yoga mat on the floor, whatever works best for you. Keeping your knee as straight as possible, lift the affected leg off the ground. As you do, pull your toes towards you. Hold this position for 3 seconds, then return to the starting position. You should bring the leg high enough that you feel a stretch in the back of your leg, but not so high up that it becomes painful. Perform this motion for the recommended amount of repetitions or as many times as you have determined to be optimal.
Frequency: 1 time per day
Volume: 2 sets of 8 repetitions
Intensity: This exercise should create some tension in the back of your leg and possibly a pulling sensation in your low back/ buttock area. It should not be painful or strenuous.
Exercise Description:To perform the "Seated Hamstring Stretch" exercise, sit at the edge of a chair and place one leg out in front of you with your knee straight. Pull your toes up towards you and then hinge at your hips and lean forward towards your toes. Lean as far as you can without triggering pain. You should feel a stretch in the straight leg. Hold this position for the recommended time or the amount of time you have determined to be optimal. Then repeat on the other side.
Frequency: 2-3 times per day
Volume: 3 sets of 30 seconds
Intensity: This exercise should create some tension in the back of your outstretched leg and possibly a pulling sensation in your low back/ buttock area. It should not be painful or strenuous.
Exercise Description:
To perform the "Runner’s Stretch" exercise, begin by sitting on a firm but comfortable surface. Place one leg straight out in front of you and bend the other so that your foot is tucked in near the thigh of the other leg. Reach forward towards your foot keeping your leg flat on the floor. Lean as far as you can without triggering pain. You should feel a stretch in the straight leg. Hold this position for the recommended time or the amount of time you have determined to be optimal. Then repeat on the other side.
Frequency: 2-3 times per day
Volume: 3 sets of 30 seconds
Intensity: This exercise should create some tension in the back of your outstretched leg and possibly a pulling sensation in your low back/ buttock area. It should not be painful or strenuous.
Section 4: Pain Management
In general, activities that increase pressure at the SIJ are the most likely to be aggravating. So, things like jumping, standing on one leg, or sitting for long periods of time should be avoided. These are just a few examples of things that may trigger your pain, it is not a complete list and anything that triggers your back pain should be avoided.
With this said, use your judgment to modify your daily routine to remain as active as possible while avoiding triggers. Continuing with your daily routine the best you can will help your back recover faster than complete rest.
As you progress and the exercises become easier, you should reintroduce the activities and positions that previously bothered you. But, do so gradually. This way you increase your back’s ability to handle these positions without overwhelming it.
When sitting, you should choose a seat that is soft and cushioned, but still has a supportive back rest. Something like a high quality office chair is would fit this criteria. Regardless of the chair you use, switch positions frequently. It may even be helpful to interrupt long periods of sitting with 30 seconds or so of standing. Avoid sitting with your legs fully extended such as you might when putting your feet up on a coffee table. This position increases tension on nerves and puts additional pressure on your back.
Standing and walking may at times be difficult and you may need to rest more often than you normally would. This does not mean you should avoid walking and standing entirely, the more you are able to do pain-free the better. When walking, try taking shorter steps to limit the amount of extension your spine experiences. When standing, engage your core and tilt your pelvis upward. This will help take your back out of extension and make standing a little easier.
The best position would be on your back with pillows under your knees to keep your back in a neutral position and remove tension on the nerves. Sleeping on your side is okay too, but place a pillow between your legs and under your hip to help support your spine. In the case that you find sleeping on your stomach the most comfortable, you can continue to do so. But if you do choose to sleep on your stomach be mindful of your neck position as sleeping on your stomach may cause your neck to be sore when you wake up. You may also want to try some of your exercises right before bed to help you sleep pain-free.
In the early stages of recovery, avoid lifting heavy objects. But, if you must, follow these steps:
1. Stand close to the object, position your feet shoulder-width apart.
2. Squat down and keep your back straight and your chest up.
3. Tighten your core muscles, and use your legs to lift the object, keeping it close to your body.
Don't twist your back as you lift. Instead, pivot your feet and turn your entire body. If possible avoid lifting overhead until your back pain has subsided as reaching overhead brings your back into extension.
If bending forward is painful, it should be avoided. You may want to use an assistive reacher until your pain subsides. For something like tying your shoes, bring your foot onto an elevated surface so you do not have to reach as far down. Using a shoe horn may also be helpful.
Some of the exercises we provided may have an immediate pain-relieving effect. These exercises can be done multiple times a day as a way to control pain when you need it. Motion can have a therapeutic effect through many avenues including increasing blood flow, releasing endorphins, and promoting relaxation. To avoid "overdoing it" listen to your body, if something feels good do more of it, if it hurts do less.
Ice and heat can also help control pain. Both can be useful, but if you're unsure, try using heat for stiff muscles and ice for sharp, acute pain. You can use both in combination, starting with ice and finishing with heat. Use each for 15-20 minutes at a time, and monitor your skin temperature to avoid burns or frostbite. Typically you should place ice or heat directly over a sore area, but you may also find benefit from treating the surrounding areas.
There are many different types of medications used in the treatment of back pain. Some of these can be obtained over-the-counter and others will require a prescription. If this is something that interests you, a conversation with your doctor or pharmacist is a good way to determine the pharmaceutical treatment options for you. Keep in mind that medication is not necessary and is rarely enough on its own to stop back pain. Instead, when appropriate, it should be used in addition to a more comprehensive program such as this one.
Finding things that provide you with temporary relief is a very normal way to get through the day. Some ways to find temporary relief include TENS (Transcutaneous Electrical Nerve Stimulation) machines and self-massage.
TENS machines use electric current to provide temporary relief by "overriding" the pain signals sent to your back. The pads and intensity should be adjusted to the instructions of your individual machine.
Massage can help loosen your back and relieve stiffness. There are many at-home massage solutions, including electric massagers and foam rollers. Electric massagers are highly adjustable to fit your needs, however, they can be expensive. Foam rollers are a cheaper option but maybe a little more intense. A massage should feel strong but comfortable, you do not get more benefit from pushing as hard as you can.
Please also keep in mind that fancy gadgets are not necessary in the treatment of back pain and you can get better without them. But if you have the means to acces them, they can be a helpful adjunct to a more comprehensive program.
Section 5: Back Pain and your Brain
With practice, a body scan can help you release muscle tension, promote relaxation, and reduce back pain by fostering a sense of self-care and deepening your mind-body connection. The point of a body scan is not necessarily to change how you feel immediately, but rather to help you understand your body's needs.
To perform a body scan:
You should find that after a body scan, you feel more control over your emotions and you should feel a restored sense of control over your body.
Breathing is a unique aspect of our physiology as it bridges the gap between our conscious and subconscious minds. With ease, you can switch between breathing automatically and actively controlling your breath. We can take advantage of this connection and use our breath to consciously have an effect on our autonomic nervous system. Our autonomic nervous system plays a big part in regulating anxiety, muscular tension, and pain perception. Below you will find two breathing techniques you can use to have a positive effect on your autonomic nervous system:
Technique #1: The Physiological Sigh
You should feel a sense of immediate calm and relaxation after performing this breathing technique.
Technique #2: Box Breathing
Repeat this cycle as needed until you feel begin to feel a sense of calm and relaxation.
Back pain has likely decreased your ability to participate in activities that you find enjoyable. Before you are able to do these things again without any pain, it is important to find modified ways you can participate in things you enjoy without triggering pain. When you participate in activities that bring you joy, your body releases endorphins, which act as natural pain relievers. Additionally, doing things you love helps distract your mind from the pain, reducing its intensity and allowing you to remain more active.
Understandably, it can be difficult to prioritize activities we enjoy and we might be discouraged if we cannot do them to the full extent we want. But playing with your kids, going on walks, riding a bike, or whatever else it might be that brings you joy in whatever capacity you can manage will promote relaxation, improve your mood, and over time will help you experience an increase in function so you are no longer limited by pain.
One Last thing…
Copyright © 2023 ThePainFreeBack | Terms & Privacy
We hope that your experience with ThePainFreeBack has been everything that you hoped it would be and that you are already finding relief.
We are always trying to make your experience better and would appreciate if you let us know what you like, might not like, or what you think would make your program better. If we’ve helped you with your back pain we would also love to know about that too!
You can provide feedback or tell us about your experience by clicking here.
But before you begin, be sure to save this webpage’s URL or bookmark the page. Without a link to this page you will lose access to your program and have to retake the quiz once you close your web browser.