Begin in a push-up position with one hand placed on a medicine ball and the other hand behind your back or on the floor. Keep your body straight from head to heels, brace your core, and slowly lower your chest toward the ball. Press back up through the arm on the ball until your elbow is extended, maintaining control and stability throughout the movement.
Log your single arm push up on medicine ball sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.