STARTING POSITION:
Lie on the floor face down and place your hands slightly wider than shoulder width apart while holding your torso up at arms length. Support your weight on your toes and hands. Keep the shoulders far from the ears retracting your shoulder blades. Contract your pelvic floor and core while keep your body straight.
MOVEMENT:
Start lowerning yourself by bending your elbows until your chest almost touches the floor while you inhale. Press your upper body back to the starting position strengthening you body while you exhale. When you finish pushing up, raise your right hand toward the roof with a rotation of the torso. Return to the starting position and perform another push up, this time you will raise the left hand after last push up. Make sure your shoulder blades are always retracted.
TIPS: Make sure your body is always in a straight line. The exercise key is quality over quantity. The trick is to perform the exercise using proper form.