HOW: Grab a thick band to loop around the inside of the squat rack at about waist height. Place your hands shoulder width apart and place your feet back with your toes pushing into the ground. From this push up position, keep your elbows straight and let your shoulder blades come back and almost touch. From there, push into the band and try to push your shoulder blades all the way around your body.
FEEL: You should feel your chest and shoulder muscles working.
COMPENSATION: Keep your body flat, don’t arch your back. Keep your elbows straight.