Skip to content
Crucible Fit
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Pricing
Get Crucible
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing
  • FAQ
  • Training Guides
Get Crucible
Crucible Fit

A daily functional fitness test for iPhone, Apple Watch and Android. Stations, reps and the Crux, sized to your readiness and your kit.

Download on the App StoreGet it on Google Play

Crucible Fit

  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing

Explore

  • Training Guides
  • Exercise Library
  • FAQ
  • Press
  • Support

Legal

  • Terms and Conditions
  • Privacy Policy
  • Consumer Health Data Notice

CRUCIBLE FIT™ and Crux by Crucible Fit are trademarks of Crucible Fit, LLC.

© 2026 Crucible Fit, LLC. All rights reserved. Apple, the Apple logo, iPhone and Apple Watch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.

  1. Home
  2. /
  3. Exercises
  4. /
  5. Back
  6. /
  7. Arms Stretch On A Support

Exercise guide

Arms Stretch On A Support

  • Beginner
  • Isolation
  • Timed hold
  • Back
  • Shoulders
  • Upper arms

This static stretch effectively opens the chest and shoulders while lengthening the biceps, helping to counteract rounded posture and improve upper body mobility.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Arms Stretch On A Support demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Biceps
  • Deltoids
  • Pectorals

Secondary

  • Serratus anterior
  • Trapezius

Equipment

  • Body weight

Setup

  1. Stand perpendicular to a wall or sturdy vertical support with your feet hip-width apart.
  2. Extend the arm closest to the support behind you and place your palm flat against the surface at shoulder height.
  3. Position your thumb pointing upward or slightly backward to optimize the shoulder rotation.

How to do it

  1. Slowly rotate your entire torso away from the wall while keeping your hand and arm fixed in place.
  2. Exhale as you turn, moving until you feel a comfortable tension across your chest and front shoulder.
  3. Hold the stretch for 20-30 seconds while taking deep, controlled breaths.
  4. Slowly rotate back to the center to release the tension and repeat on the opposite side.

Form checklist

  • Keep your shoulder blade retracted and depressed, avoiding the 'shrug' toward your ear.
  • Maintain a very slight micro-bend in the elbow to protect the joint.
  • Keep your torso upright and core engaged to prevent arching your lower back.
  • Ensure your feet and hips turn with your torso to avoid twisting at the spine.

Pro tips

  • Vary the height of your hand on the wall; a higher hand position targets the lower pectorals, while a lower hand position emphasizes the upper pectorals and biceps.
  • To deepen the bicep stretch, focus on fully extending the elbow and pressing the base of your palm into the support.

Make it harder

  • Lean your body weight slightly forward while rotated to increase the leverage on the anterior deltoid.
  • Perform the stretch with your arm bent at a 90-degree angle (cactus arm) against the wall to focus more intensely on the pec minor.

Frequently asked

What muscles does the arms stretch on a support work?
The arms stretch on a support primarily targets the biceps, deltoids, and pectorals, and also works the serratus anterior and trapezius as secondary muscles.
What equipment do you need for the arms stretch on a support?
The arms stretch on a support requires no equipment — just your body weight.
Is the arms stretch on a support good for beginners?
Yes. The arms stretch on a support is a beginner-friendly movement and a strong foundation to build on.

Related exercises

  • Sledge HammerIntermediate · biceps, deltoids, erector spinae, lats, pectorals, and triceps
  • Alternate Front Kick In Place With Arm CirclesBeginner · abs, calves, deltoids, and pectorals
  • Band Curl To PressBeginner · biceps and pectorals
  • Barbell Pullover-To-PressIntermediate · deltoids, pectorals, and triceps

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

Download on the App StoreGet it on Google Play

See how a Crucible works