Overview

The towel stretch for internal rotation uses a simple towel to help you gently improve how far you can reach behind your back — the motion you use for tasks like fastening a bra strap or tucking in a shirt. It's a gentle, low-equipment stretch that's especially useful when shoulder stiffness makes these everyday movements difficult.

Stretch Name

Towel Stretch for Internal Rotation

Primary Purpose

Improve internal rotation behind the back, a motion often restricted after shoulder injury, surgery, or with frozen shoulder
Support everyday tasks like reaching behind your back, tucking in clothing, or fastening undergarments
Use gentle, assisted motion (with the help of your other arm and a towel) to work on range of motion without forcing the joint

Reaching behind your back combines several shoulder motions at once, which is why it's often one of the last movements to return after a shoulder injury or surgery. This stretch breaks that motion down into a simple, assisted stretch you can do with a towel and your other arm's help.

Target Muscles

Subscapularis — one of the structures that can limit internal rotation when tight
Rotator Cuff Overview — the group as a whole is involved in the motion being stretched
Glenohumeral Joint — the joint capsule itself is gently stretched, especially if stiffness is coming from the capsule rather than the muscles

Difficulty Level

Beginner

Equipment Required

A hand towel, dish towel, or belt

Who Should Perform This

People recovering from adhesive capsulitis (frozen shoulder) who have lost the ability to reach behind their back comfortably
Anyone with general shoulder stiffness limiting internal rotation
People with shoulder impingement syndrome or rotator cuff tendinitis working on overall shoulder flexibility
Older adults working on maintaining functional shoulder range for daily activities

Who Should Avoid This

Anyone with a recent shoulder dislocation or ongoing instability where this motion hasn't been cleared
People with an unhealed fracture around the shoulder or upper arm
Anyone less than several weeks post-shoulder surgery without their surgeon's clearance for this specific stretch
People who feel sharp or pinching pain rather than a mild stretch — stop and check with a health professional

Step-by-Step Instructions

Hold one end of a towel behind your back with your affected arm, reaching up from below.
Reach over your opposite shoulder with your other hand and grab the other end of the towel from above.
Gently pull upward with your top hand, which draws your affected arm's hand further up your back.
Stop when you feel a mild, comfortable stretch — not sharp pain — in the back or front of your shoulder.
Hold for 15–30 seconds, breathing normally.
Slowly release and repeat 2–3 times per side, once or twice per day.

Common Mistakes

Pulling too hard or too fast — this stretch can be intense if you pull aggressively. Increase the pull slowly and stop well before any sharp pain.
Letting the affected shoulder round forward — try to keep your posture upright and your shoulder in a natural position rather than letting it collapse forward.
Holding your breath during the pull — breathe steadily throughout the hold to help your shoulder relax into the stretch.
Forcing the stretch daily without any rest — like any stretch, consistency matters more than intensity; a gentle daily stretch beats an aggressive occasional one.

Progressions

Gradually increase how far up the back you can comfortably reach over time
Hold for slightly longer, working up to 30 seconds per repetition
Combine with the sleeper stretch for more comprehensive internal rotation improvement

Easier Alternatives

Use a longer towel or a belt if a standard towel doesn't give you enough length to grip comfortably
Reduce how far you pull, focusing on a very gentle stretch at first
Ask a family member or physiotherapist to help guide the stretch gently if reaching behind your back on your own is too difficult

What You Should Feel

A mild, comfortable stretching sensation in the back or front of your shoulder, or sometimes along your upper arm
No sharp pain, pinching, numbness, or tingling — ease off if you notice any of these

Adhesive Capsulitis (Frozen Shoulder) — this stretch directly targets a commonly restricted motion in frozen shoulder
Shoulder Impingement Syndrome — improved internal rotation supports overall shoulder mechanics
Rotator Cuff Tendinitis — gentle mobility work can complement strengthening in a full rehab program

Glenohumeral Joint — the joint capsule targeted by this stretch
Subscapularis — one of the structures involved in limiting or allowing this motion
Rotator Cuff Overview — the muscle group involved in the movement

References

Cleveland Clinic. "Frozen Shoulder (Adhesive Capsulitis)." https://my.clevelandclinic.org/health/diseases/12138-frozen-shoulder
Mayo Clinic. "Frozen shoulder — Diagnosis and treatment." https://www.mayoclinic.org/diseases-conditions/frozen-shoulder/diagnosis-treatment/drc-20372349
Physiopedia. "Rotator Cuff Strengthening Exercises." https://www.physio-pedia.com/Rotator_Cuff_Strengthening_Exercises

This information is for education only and is not a medical diagnosis. InjuryAtlas does not replace an assessment by a qualified health professional. If you have severe pain, visible deformity, numbness, loss of function, or symptoms that are getting worse, seek medical care promptly.