Night fitness is actually more conducive to health, first of all, the air environment at night than in the morning to be a lot better, but not easy too late, if too late, or before going to bed, it is easy to cause insomnia problems, long-term, it will be easy to cause neurasthenia problems. Healthy exercise time should be in the evening 5:00 to 6:00 or so of the time, generally 1 to 2 hours of exercise per day can be, if excessive exercise, on the contrary, will cause physical fatigue.