First of all, long-term fitness should be good for our health. It can not only help us to have a relatively beautiful figure, but also make our bodies stronger and healthier. It can also change a person's vitality and make people more confident. However, staying up late for a long time is not a correct way of life. Staying up late for a long time can easily lead to immune dysfunction, sudden death of hypertension, neurasthenia, headache and insomnia. People who stay up late to play mobile phones may have a great impact on their eyesight. So when the two appear at the same time, the disadvantages often outweigh the advantages.