Rotator Cuff Stretch Timer
Rotator Cuff Anatomy: The Four Muscles
Supraspinatus
Initiates shoulder abduction (the first 15 degrees of raising the arm). Most commonly injured cuff muscle. Runs through a narrow space that can become compressed in impingement.
Infraspinatus & Teres Minor
External rotators. The most important muscles for shoulder health and stability. Weakness here leads to impingement, labral tears, and poor overhead mechanics.
Subscapularis
The largest cuff muscle. Internal rotator. Most often overlooked in both training and stretching. Tightness here (very common in lifters) reduces external rotation and overhead mobility.
Warning Signs That Need Medical Evaluation
- Night pain that wakes you from sleep
- Inability to raise your arm above shoulder height
- Sudden severe pain with a "pop" during activity
- Significant weakness compared to the other side
- Pain with pressing or reaching behind your back
Stretch Guide
Cross-Arm Stretch
Infraspinatus + Teres MinorBring one arm across the chest at shoulder height. Use the opposite forearm to press the arm closer to the body (not pulling the wrist). Hold 30-45s. You feel it in the back of the shoulder.
Pulling the wrist — this puts stress on the elbow. Use your forearm to press just above the elbow.
Sleeper Stretch
Posterior Capsule (Key)Lie on the stretching shoulder. Elbow at 90 degrees. Use the other hand to press the forearm toward the floor (internal rotation). This stretches the posterior capsule — critical for impingement prevention.
Too much force. This stretch can be aggressive. Apply gentle, sustained pressure — not a hard push.
Doorway Stretch
Anterior Shoulder + SubscapularisArm on doorframe at various heights: low (subscapularis), mid (pec major), high (pec minor + anterior capsule). Lean forward gently. Hold each position 30s.
Only stretching at one height. Each arm position targets a different structure — vary the height systematically.