Diamond Downsizer (Works butt, hips, thighs) Lie on right side, legs stacked, knees bent, with right forearm supporting upper body, left hand in front of body. Raise legs about 3 inches off floor. Keeping legs lifted and instep of feet touching, open left knee so legs form a diamond shape (as shown). Open and close legs. Do 2 sets of 16 reps. Switch sides; repeat.