Move 3: Pool Push-Ups
With feet not touching the bottom, place your hands on the pool edge slightly wider than shoulder-width apart (shown, near right). Exhale and push up (as if getting out of the pool). Contract your abdominals, keep your shoulders down, and avoid locking your elbows (shown, far right). Inhale and slowly lower yourself back into the water; stop when your elbows are bent to 90 degrees. Do two sets of 10 to 15 reps.