Instructions
Place hands on the floor, shoulder width apart, inline with your chest. With straight arms, position your body in a plank like position, with your toes on the floor and your legs hip width apart. Brace your core and keep your elbows tucked into your sides. Bend your elbows down until your upper arm is parallel to the floor or below. Push yourself up to repeat.
Tips
The wider you place your hands the more this exercise will work your chest. The narrower your hands, the more it will work your triceps. To decrease the difficulty of this exercise, you can perform it on your knees.