Aquatic aerobics is referred to aerobic exercises using big muscles. We do not need simming skills, any age levels, and different physical stamina persons can all reach very good sport result. Good equipment and suitable intensity when doing exercises on land, or knee joints may bear heavily from gravity resulting in sports injuries. But it's safe in water Aquatic aerobic exercise as its name does aerobic exercise in water: It does not need any swimming skills, and can reach good effects regardless of age, or condition. The study focuses on a characteristic of water and water exercises describing the advantages of aquatic aerobic exercises.