For fitness, regardless of age. Fens Fitness Institute has 16-year-old students, as well as dozens of years old students. Young people's pursuit of bodybuilding muscles can not only enhance their self-confidence, but also increase their chances of picking up girls. For a 40-year-old middle-aged man, fitness is to enrich himself after work every day. Enrich yourself. Fitness is not just about keeping fit. More importantly, I can always keep a young heart and infect my family. This optimistic attitude towards life can bring happiness that people who don't exercise can't.