My personal understanding is that the ultimate effect of both is to improve physical fitness and maintain a healthy physical condition. Using the natural environment to keep fit is an economical and convenient way, which can be carried out anytime and anywhere. Being in the natural environment can not only strengthen the body, but also be of great help to the mind, which can better relieve the inner pressure. The purpose of improving physical fitness is relatively direct and has certain limitations. This understanding of health may be a bit biased, and the time may be relatively fixed. Simply exercising for the sake of the body only exercises the external content, while the psychological adjustment may be ignored. If there is a good natural environment around, it is still recommended to exercise in the natural environment. Fitness is long-term and needs comprehensive consideration. Don't just exercise for the sake of fitness, take fitness as a life attitude.