Most people do aqua fitness for cardio exercise, but it is also awesome for stretching and meditation. Youtube has several aqua yoga videos. This one linked above by Austin Aqua Yoga is a good example of how you can do moves in the pool gently to stretch and meditate. Aqua yoga is a good way to relax in the pool and still get some toning and stretching. Aqua yoga is also a good way to introduce yourself to aqua fitness if you are easing into working out after a long period of inactivity.