Loop a long resistance band around a secure anchor point close to the floor. Facing away from, and ensuring a good distance between yourself and the anchor point, come into an all fours position. Place your left hand into the other end of the resistance band and position it at your wrist joint. Your hand should be flat to the floor with your fingers pointed forwards. There should be a good amount of tension on the band. This is your start position. From there, rock slowly forward moving your shoulders over your wrists and keeping your palm in full contact with the floor throughout the movement. Then move slowly backward to the start position. Keep the elbow joint as straight as possible throughout. Repeat this back and forth motion on both sides for the recommended amount of time.