Aquatic exercise is a low-impact activity that takes the pressure off your bones, joints and muscles. Water also offers natural resistance, which can help strengthen your muscles. Aquatic exercise can also have several health benefits, such as improved heart health, reduced stress, and improved muscular endurance and strength. Exercising in the water can be a great way to include physical activity into your life. It may also be a beneficial way for older adults to stay active. You can even do aquatic exercise if you don't know how to swim. Aquatic exercise can also improve joint use and lessen pain if you have osteoarthritis.