
hyperextension (on bench)
RachisPoids du corps

Étape 1: Place the stability ball on the ground and lie face down on top of it, with your hips resting on the ball and your feet against a wall for stability.
Étape 2: Extend your arms straight out in front of you, with your palms facing down.
Étape 3: Engage your core and slowly lift your upper body off the ball, keeping your back straight and your neck in line with your spine.
Étape 4: Pause for a moment at the top, then slowly lower your upper body back down to the starting position.
Étape 5: Repeat for the desired number of repetitions.