# Sleepers Stretch - Canonical: https://fitwill.app/exercise/9212/sleepers-stretch/ - Media ID: 9212 - Primary muscle: Shoulders - Body part: Shoulders - Equipment: Exercise Mat - Video: https://fitwill.app/videos/9212/sleepers-stretch.mp4 ## Description The Sleeper Stretch is a side-lying shoulder mobility drill that targets the posterior rotator cuff, mainly the infraspinatus and teres minor, along the back of the shoulder capsule. You lie on the side of the shoulder you want to stretch, set the arm at shoulder height with the elbow bent to ninety degrees, and gently press the forearm down toward the floor with your free hand. The name comes from the position: you look as if you are lying on your side sleeping, with the top arm doing the work. This stretch is a staple for anyone with restricted shoulder internal rotation. Overhead athletes like baseball players, volleyball players, swimmers, and tennis players lose internal rotation on their throwing or serving arm over a season, and desk workers often carry the same stiffness from rounded postures. Lifters who bench or press frequently and feel a pinch at the back of the shoulder during those movements also tend to benefit from spending a few minutes in this position. The setup is what makes the stretch effective. Lying on your side blocks the shoulder blade from tilting and rotating to compensate, which forces the stretch into the actual shoulder joint instead of letting the scapula fake the range for you. The head rest keeps the neck neutral, and the body stacked tall on the mat keeps your spine out of the movement. Without that stability, most people simply roll backward and never feel the stretch where it matters. To perform it well, keep the stretched arm exactly at shoulder height and the elbow locked at ninety degrees, then use the top hand to rotate the forearm toward the floor only until you feel a mild to moderate stretch across the back of the shoulder. The sensation should sit deep in the posterior shoulder, never in the front of the joint or the neck. Hold the end position for twenty to thirty seconds with slow, relaxed breathing, then ease the pressure off gradually rather than letting go suddenly. A common use case is post-workout recovery on upper body days, or as a standalone mobility block for throwers between training sessions. Many people run two to three sets per side. Because the tissue being stretched is small and close to the joint, patience matters more than force here. A little discomfort is expected; sharp pain, tingling, or a catching feeling in the shoulder means you should back off or shorten the range. If lying directly on the shoulder is uncomfortable, place a thin folded towel under the side of the ribcage or reduce how far you press the arm. The goal over weeks is a small, steady gain in pain-free internal rotation, not a dramatic stretch on day one. ## Instructions 1. Lie on your side on an exercise mat with the shoulder you want to stretch underneath you, legs stacked and body in a straight line from head to hips. 2. Extend your bottom arm out along the floor above your head or rest it comfortably, and place a roll or folded towel under your head so your neck stays neutral. 3. Bring your top arm forward to shoulder height and bend the elbow to ninety degrees, with the forearm pointing up toward the ceiling and the palm facing away from you. 4. Grip the wrist or forearm of the stretched arm with your free hand and brace your trunk lightly so your torso cannot roll backward during the stretch. 5. Slowly press the forearm of the stretched arm down toward the floor, rotating the shoulder internally while keeping the upper arm fixed at shoulder height. 6. Stop at the point where you feel a mild to moderate stretch across the back of the shoulder, and hold that position for twenty to thirty seconds. 7. Breathe slowly and steadily throughout the hold, exhaling as you ease slightly deeper into the range without forcing it. 8. Release the pressure gradually, let the forearm return to vertical, and rest for a few breaths before repeating. 9. Complete two to three holds, then roll over and repeat on the other side if both shoulders need work. ## Tips & Tricks - If you feel the stretch in the front of the shoulder or the neck instead of the back of the shoulder, you are pressing too far or too fast; reduce the angle until the sensation moves to the posterior shoulder. - Keep the elbow bent at exactly ninety degrees. Straightening the arm as you press turns this into a different stretch and loads the elbow rather than the shoulder capsule. - Do not let your torso roll backward as the arm descends. Brace lightly and think about keeping the shoulder blade flat against the mat, or the stretch loses most of its value. - Watch the head position. Craning the neck or pushing into the hand under the head is a common giveaway that the stretch is too aggressive; adjust the roll height so the neck stays in line with the spine. - Apply pressure through the forearm, not the hand or wrist, to avoid stressing the wrist joint while the shoulder rotates. - Warm the shoulder first with light arm circles or a short upper body warm-up; stretching a cold posterior capsule is harder and less comfortable. - If lying directly on the shoulder is uncomfortable, slip a thin folded towel under the side of the ribcage to take pressure off the joint. - Progress slowly across weeks. Adding a few degrees of range each session is a better outcome than one aggressive session that leaves the shoulder irritated for days. - Skip pressing into the floor entirely on days when the shoulder feels achy and just hold the arm at ninety degrees, letting gravity provide a passive stretch. ## Frequently Asked Questions ### What does the Sleeper Stretch target? It primarily stretches the posterior rotator cuff, especially the infraspinatus and teres minor, along with the posterior capsule at the back of the shoulder. The rear shoulder also feels the stretch as the arm rotates internally. ### Why does the Sleeper Stretch have to be done lying on my side? Lying on the side pins the shoulder blade so it cannot tilt or rotate to compensate for limited shoulder motion. This forces the stretch into the joint itself, which is what makes the drill more specific than a standing internal rotation stretch. ### Is the Sleeper Stretch good for beginners? Yes, as long as you start gently. Beginners should press only to a mild stretch and may need to shorten the hold to fifteen to twenty seconds while learning to keep the torso from rolling. ### How long should I hold the Sleeper Stretch? Twenty to thirty seconds per hold works well, repeated two to three times per side. For throwers managing a big training load, a longer sixty-second gentle hold can also be used. ### I feel the Sleeper Stretch in my neck or the front of my shoulder. What am I doing wrong? You are likely pressing too far or letting the shoulder blade lift off the floor. Reduce the range until the sensation sits across the back of the shoulder, and check that your torso stays stacked over your bottom side. ### Can I do the Sleeper Stretch without a roll under my head? Yes. A folded towel, a small cushion, or even your bottom arm bent under your head works. The goal is simply to keep the neck neutral so it does not strain while you focus on the shoulder. ### When is the best time to do the Sleeper Stretch? It fits well after upper body training, throwing, or pressing sessions when the tissue is warm. Many people also use it as a standalone evening mobility block. ### Is there a substitute if lying on my side hurts my shoulder? A standing or seated cross-body arm stretch is the closest alternative, though it is less specific because the shoulder blade can still move. A coach-guided posterior capsule stretch with a stick or strap is another option. ### Should I feel pain during the Sleeper Stretch? No. A mild to moderate stretch sensation across the back of the shoulder is expected, but sharp pain, tingling, or a catching feeling means you should ease off immediately and reduce the range.