Exercise movement reviewed by:Cody Lockling, MS, CSCS

How Iridium Programs This

Since the static overhead position taxes the shoulders, Iridium cross-references anterior deltoid recovery status to ensure your core remains the limiting factor during the set. The system tracks RPE specifically for weighted abdominal work, recommending heavier medicine balls or increased reps to drive progressive overload. If your recent history shows heavy vertical pressing, Iridium may substitute this for a variation that requires less upper body stability to match your current recovery state.

Form Cues

Keep your arms fully extended and locked out overhead throughout the movement
Press the medicine ball straight up toward the ceiling as you rise
Keep your feet planted firmly flat on the floor
Brace your abs tightly before initiating the upward movement
Lower your torso slowly and with control, unrolling your spine vertebrae by vertebrae

Don't

Don't let the medicine ball drift forward in front of your face
Don't use momentum or jerk your body off the floor
Don't lift your feet or heels off the ground
Don't bend your elbows to bring the ball closer to your chest
Don't slam your back down during the lowering phase

Common Mistakes

drifting arms forward
using momentum to sit up
bending elbows during movement
lifting feet off the floor
arching lower back excessively

Muscles Worked

This exercise primarily targets the rectus abdominis, forcing the upper abs to work efficiently to flex the spine against the increased lever arm of the overhead weight. The hip flexors assist in the upward phase, while the anterior deltoids and triceps work isometrically to stabilize the medicine ball overhead.