What it works: back, shoulders, glutes
How to do it: Place one handle of your exercise band around your left foot. Come onto your hands and knees, holding the other end of the band with your right hand. Extend your right hand and left leg at the same time, hold for a few seconds, then slowly return to starting position. This counts as one repetition. Do a total of 15 to 20 reps on this side, then switch and do 15 to 20 reps on the other side.