With the trend of diversified lifestyles, the “9 to 5” work pattern can no longer fully summarize the modern work status. Night shift drivers, 24-hour convenience store employees, freelancers …… more and more people are joining the ranks of the “late night people”. Experts point out that the behavior contrary to the laws of nature, there is often a potential hazard to human health. For the “late night people”, defending their health is the top priority in life. Staying up late irregularly is worse than staying up regularly. Staying up late is a chronic hazard to one’s health, especially for those white-collar workers who sleep late intermittently (irregularly), and the frequent adjustment of the biological clock is particularly harmful to health. As a result, there have been calls from Western labor protection experts for night shift workers to be relatively fixed in the same category of people. People who stay up late for a long time are more likely to suffer from cancer because cancerous cells are produced during cell division, which mostly takes place during sleep. Staying up late disrupts the sleep pattern and affects the normal cell division, which leads to cell mutation and cancer cells. Generally speaking, the skin enters the evening maintenance state from 10:00 pm to 11:00 pm. If you stay up late for a long time, the normal circulation of human endocrine and nervous system will be out of order. The dysfunction of nervous system will make the skin appear dry, poor elasticity, dullness and lack of luster; and the dysfunction of endocrine will make the skin, especially the skin of young people, prone to acne, pimples, chloasma, dark spots and other problems. Eat more foods rich in vitamin C or containing collagen, such as fruits and meat skins, at dinner time. You can also eat more cooler foods, such as melon apples, millet and barley. In addition, dinner should eat less spicy food, while less alcohol, you can drink more fresh fruit juice or soy milk, etc.. In the late night on the body caused by a variety of damage, the most common is to make people often fatigue, mental discomfort, body resistance and then decreased. For people with weak resistance, respiratory diseases such as colds and flu, gastrointestinal and other digestive tract diseases will also come to the door.