Exercise guide
Dynamic Chest Stretch
- Beginner
- Isolation
- Timed hold
- Chest
- Shoulders
A dynamic warm-up movement designed to improve shoulder mobility and increase blood flow to the pectorals and anterior deltoids. It uses controlled momentum to active the chest and prepare the upper body for compound pressing movements.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Setup
- Stand tall with your feet shoulder-width apart and a slight bend in your knees.
- Extend your arms straight out to your sides at shoulder height with your palms facing forward.
- Engage your core and maintain a neutral spine with your gaze forward.
How to do it
- Swing your arms horizontally across your chest in a controlled motion, crossing one arm over the other.
- Immediately swing your arms back out as far as comfortable to feel a deep stretch in the chest and front of the shoulders.
- Inhale as you open your arms wide and exhale as you cross them in front of your body.
- Continue the movement rhythmically, alternating which arm crosses on top for each repetition.
Form checklist
- Keep your arms at shoulder height throughout the movement.
- Avoid arching your lower back as your arms swing behind your torso.
- Keep your shoulders down and away from your ears to avoid shrugging.
- Maintain a slight bend in the elbows to protect the joints.
Pro tips
- Focus on actively squeezing your shoulder blades together at the end of the outward swing to maximize the stretch.
- Vary the angle of the swing slightly—sometimes higher, sometimes lower—to target different fibers of the pectoral muscles.
Make it harder
- Hold very light micro-plates (1-2 lbs) to add a small amount of resistance to the dynamic movement.
- Increase the tempo of the swings while maintaining a perfectly still and braced torso.
Frequently asked
- What muscles does the dynamic chest stretch work?
- The dynamic chest stretch primarily targets the pectorals, and also works the abs and serratus anterior as secondary muscles.
- What equipment do you need for the dynamic chest stretch?
- The dynamic chest stretch requires no equipment — just your body weight.
- Is the dynamic chest stretch good for beginners?
- Yes. The dynamic chest stretch is a beginner-friendly movement and a strong foundation to build on.