Water is one of the best fitness tools: It provides resistance, which strengthens muscles and boosts cardiovascular intensity. It also supports some of your weight, making workouts easier on joints and reducing injury.
Aquatic exercises can help you heal faster too. Doctors often recommend them for people with joint injuries, infections or surgeries as a way to stay fit and shorten recovery time.
They also can ease symptoms of chronic conditions, such as chronic fatigue syndrome (CFS), fibromyalgia, and arthritis.
"Working out in water is very safe because no joints or bones are forced to bear too heavy a load," says Andrew Jones, M.D., an orthopedic surgeon in Chapel Hill, N.C.
That's why it's such a great low-impact initiation into fitness if you're obese or just way out of shape.
Anyone can do this workout!