This low impact aerobic activity is ideal for seniors with limited mobility as well as those who have been sedentary. Water increases a body’s buoyancy which in turn allows for more fluid body movements in the pool. Those dealing with degenerative diseases such as arthritis, osteoporosis, and cardiovascular issues find this a perfect exercise prescription. Body weight movements in addition to the natural resistance of the water strengthen the muscles in a soothing environment. Outdoor pools are useful during spring or summer. Indoor pools are more appropriate for fall and winter.