Staying up late for a long time and lack of sleep are the most harmful to the brain, which will lead to long-term blood supply deficiency, frequent headaches and memory loss, and increase the incidence of Alzheimer's disease.

2, more likely to get sick

Sleep time at night is the detoxification time of human liver. If you stay up late for a long time, it will endanger the health of the liver, thus reducing the immune ability of the human body, leading to poor health and being more prone to illness.

3, lead to obesity

People who stay up late for a long time are also more likely to be obese, because the sleep time at night is also the time when the body secretes leptin. If the human body secretes less leptin, it will affect the decomposition of fat and increase appetite, thus making it easier to be obese.