Shoulders
Bag training
A controlled, isometric-focused sequence designed to build shoulder stability and endurance using bodyweight tension.
How to perform.
Follow the sequence — setup is half the lift.
Stand with your feet shoulder-width apart and your core engaged to maintain a neutral spine.
Extend your arms directly out to your sides at shoulder height with your palms facing downward.
Maintain a slight bend in the elbows while actively reaching outward to create tension across the deltoids.
Perform small, controlled circular motions or isometric pulses while keeping the shoulder blades retracted and depressed.
Transition the arms to the front of the body at shoulder height while maintaining the same level of tension.
Hold the final position for the prescribed duration while breathing steadily and avoiding shrugging toward your ears.
Common mistakes.
Fix these first — they cost reps, kilos, and joints.
- Allowing the shoulders to shrug upward toward the ears
- Arching the lower back to compensate for arm fatigue
- Dropping the arms below shoulder height during the movement
Muscles worked.
The primary movers do the work; the stabilizers keep the path honest.