Rear Deltoid Stretch
- Target muscle
- Deltoid Posterior
- Equipment
- Body weight
- Body part
- Shoulders
- Type
- Stretching
The Rear Deltoid Stretch is a bodyweight stretching exercise that targets the posterior deltoid by drawing one arm horizontally across the chest. It improves shoulder flexibility and range of motion, and is commonly used as a warm-up, cool-down, or recovery tool for anyone who trains the upper body.
How to do the Rear Deltoid Stretch
- 1Stand tall or sit upright with your feet hip-width apart and your spine neutral.
- 2Extend your right arm straight out in front of you at shoulder height.
- 3Reach your right arm horizontally across your chest toward the opposite shoulder.
- 4Hook your left forearm or hand under your right elbow to draw the arm closer to your body.
- 5Keep your right shoulder down and away from your ear — avoid shrugging.
- 6Hold the stretch for 20–30 seconds, breathing steadily and relaxing into it.
- 7Release slowly, then repeat on the left arm.
Form tips
- Let the hooking arm do the work and keep the stretched arm passive — actively holding it up keeps the deltoid contracted and blocks the stretch.
- Apply gentle, steady pressure with the hooking arm rather than forcing the stretch to deepen it safely.
- Drop the stretched arm slightly below shoulder height if you feel pinching at the front of the shoulder; the lower angle keeps tension in the rear delt.
- Exhale as you pull the arm across to help release muscular tension and deepen the stretch.
Common mistakes
- Rotating the torso in the direction of the stretch, which reduces the load on the posterior deltoid and turns it into a back stretch.
- Shrugging the stretching shoulder upward, which engages the upper trapezius and takes tension off the rear delt.
- Bending the elbow of the stretching arm, which shortens the lever and reduces the stretch on the posterior deltoid.
- Rushing through the hold, which prevents the muscle from fully relaxing and limits flexibility gains.
Frequently asked questions
What does the Rear Deltoid Stretch target?
It primarily targets the posterior deltoid — the rear head of the shoulder muscle — improving its flexibility and reducing tightness after pressing or pulling exercises.
How long should I hold the Rear Deltoid Stretch?
Hold each side for 20–30 seconds. For flexibility gains, repeat 2–3 times per side and perform the stretch consistently after training sessions.
When should I do the Rear Deltoid Stretch?
It works best as part of a cool-down after upper-body training, or as a mobility drill before overhead and pulling movements to prepare the shoulder joint.
Why do I feel the stretch in my upper back instead of my shoulder?
This usually means your torso is rotating toward the stretching arm. Keep your chest square and your shoulder pulled down to direct tension specifically to the rear deltoid.
Can the Rear Deltoid Stretch help with shoulder pain?
Gentle stretching of the posterior deltoid can relieve tightness that contributes to poor shoulder mechanics, but consult a healthcare professional before using it to address existing pain or injury.
