Start in a plank position with both hands placed close together on a medicine ball under your chest. Keep your body in a straight line and elbows tucked close to your sides as you lower your chest toward the ball. Press back up by extending your arms while maintaining core tension and balance. The unstable surface increases difficulty and activates stabilizing muscles throughout the movement.
Log your medicine ball close grip push up sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.