Begin on your hands and knees with your hands a little wider than shoulder-width apart and your thumbs in line with your chest. Slide your knees back slightly until you create one long line from your knees to the crown of your head, keeping your back neutral and your navel pulled toward your spine. Slowly bend your elbos out to the sides and lower your chest toward the floor, stopping when your upper arms are parallel to the floor. Keep your shoulders rolled back and push back up to the starting position. Do as many as you can for 30 to 60 seconds.