This exercise is a progression of the traditional pushup which requires more upper body, strength and stability. Placing one arm on the medicine ball increases core stabilization and balance.
Get in the standard pushup position with one hand on the floor and the other hand on top of the medicine ball. Your body should be in a straight line with your legs straight and toes pointing into the ground.
Brace core and slowly lower yourself towards the ground. Pause and press back up to the starting position.
Do not let your elbows flare outward during the movement.
Make sure that the hand on the medicine ball is stable before lowering your body.