Stand by the side of the pool. Hold the wall with one hand. Step on the noodle with your far foot slightly in front of your body. Keep your other hand still by your side and your back straight.
Keep your far leg straight and raise it up slightly below your hip level. Bend your knee about 90 degrees and then push the noodle down as deep as you can, as you extend your leg, returning to the starting position. Keep your hands rested and your shoulders relaxed. Stand in good posture and keep your other leg still.