"...Whether you swim in laps, run in water, or perform aqua aerobic exercises, the fitness value of water exercise is superb. It conditions the heart, lungs, and all major muscle groups, building muscle endurance and strength, as well as cardio-respiratory endurance. Best of all, since 90 percent of your body is supported by water, there is a very small injury risk because there is little stress on joints and ligaments. Water exercise is probably the best choice..."
"Water Workout" By Sherry B. Hanson
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