Single arm medecine ball push-ups

Instructions

Get into a face-down position on the ground, supporting your weight on your toes and your hands slightly more than shoulder-width apart. Put a medecine ball under one of your hands. This is the starting position.
Bend your arms to slowly lower your body until you feel a stretch in your chest or shoulders. No need to go extra-low.
Hold this position for one second, then go back to the starting position.

Muscles