Lying Shoulder Internal Rotation Stretch

Beginner Mobility

Flat bench
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A lying shoulder mobility drill on a flat bench that turns the forearms down toward your feet and back up to vertical. Stretches the back of the shoulder and improves how far the upper arm turns inward.

Also known as: Lying Bench Internal Rotation Stretch, Supine Shoulder Internal Rotation Stretch

How to do the Lying Shoulder Internal Rotation Stretch

  1. Lie on the bench, upper arms out to the sides, elbows bent 90 degrees.
  2. Turn your forearms down toward your feet, elbows in place.
  3. Stop at a stretch in the back of your shoulders.
  4. Turn your forearms back up until they point at the ceiling.
Full technique — 6 steps
  1. Lie on your back along a flat bench with your legs straight.
  2. Hold your upper arms out to the sides at shoulder level, elbows bent to 90 degrees and forearms pointing at the ceiling.
  3. Keep your elbows at the same spot and turn your forearms forward and down toward your feet.
  4. Stop when you feel a stretch at the back of your shoulders, before the fronts of your shoulders lift off the bench.
  5. Pause briefly, then turn your forearms back up until they point at the ceiling.
  6. Keep the 90-degree bend in your elbows through the whole rep.

Common mistakes

  • Letting the shoulders roll forward off the bench
  • Straightening the elbows during the rep
  • Sliding the elbows toward the hips
  • Bouncing at end range

Form cues

  • Elbows stay in place
  • Keep elbows at 90 degrees
  • Shoulders stay on the bench
  • Stretch, don't force

Quick answers

What muscles does the Lying Shoulder Internal Rotation Stretch work?

Primary: Infraspinatus 8/10, Teres minor 7/10. Also works: Subscapularis 4/10, Rear delts 4/10, Front delts 3/10.

When should I do the Lying Shoulder Internal Rotation Stretch in a workout?

Warm-up. Done at the start to get the body ready. ≈ 2 min with rest.

How many sets and reps of the Lying Shoulder Internal Rotation Stretch?

Strength: 1–2 sets of 8–10 reps, rest 20 s, 6 reps in reserve. Muscle growth: 1–2 sets of 8–10 reps, rest 20 s, 6 reps in reserve. Endurance: 2–3 sets of 10–15 reps, rest 20 s, 6 reps in reserve.

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