Strengthens deep abdominals, shoulders, arms, thighs and buttocks. Stretches the inner thighs and low back.
Wrap a floating noodle around your back and under your arms, making a horseshoe shape. Lean back into the noodle and, contracting your abdominal muscles, pull your legs to the surface of the water. Exhale and keep your abs tight as you bend your knees and put the soles of your feet together, letting your knees splay apart. (Think of it as a “froggy” position.) Fully extend your legs, pushing them through the water and inhaling as you straighten your knees. Remember that this extension part of the exercise is just as important as the contraction, Kooperman says.