STARTING POSITION:
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.
MOVEMENT:
Move your right knee through your right side towards your right elbow while you exhale. Return to the starting position in a smooth movement while you inhale. Repeat the movement for the specified amount of repetitions and then switch sides and repeat with the other leg.
TIPS: Don't let the hips go down.