There are many ways to exercise and each has its advantages and disadvantages. For example, on foot, steps and the ground impact force is small, but consume fewer calories than running on foot. Swimming rarely cause muscle tear, because there is water to support the muscles, but swimming is not a weight-bearing exercise, can help prevent osteoporosis. Other related to exercise options are: some people choose to exercise in the gym, the gym or home, but some people like to exercise in the open air. Some people arrange exercise in daily life, such as walk or ride a bike instead of driving for. Choosing the right fitness exercise is looking for a fun, safe and affordable.