HOW: Lie on your back a band looped around the top of your back holding onto it with both hands. Bend your knees up with your feet flat on the ground. Bring your elbows up high straight out from your shoulders holding the band overhead. From here, extend your forearm up out in front of you and back down while you keep your elbows still.
FEEL: You should feel your triceps muscle working.
COMPENSATION: Don’t move your elbows, keep them stationary.