Get in to a face down position. Extend your legs straight out behind you. Support your weight on your toes and forearms. Your forearms should be paralel between them and your toes at shoulder width apart. Keep the head facing the floor. Squeeze your abdominal and oblique muscles.
Using your triceps, raise your body fully extending your elbows. Exhale during the movement. Return to the starting position in a smooth movement while you inhale.TIPS: Don't let the hips go down at any time.