
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: Position your hands behind your head or crossed over your chest.
Étape 3: Engage your core and slowly lift your upper body off the ball, extending your back until your body forms a straight line from your head to your heels.
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.