There is no definite clinical time on how long you can stay up late to die suddenly, but staying up late for a long time will indeed affect human health and increase the chance of sudden death. Staying up late at night is the peak time of human metabolism, so the body is in a depleted state, resulting in the inability to produce enough new cells, so that metabolic waste is not effectively processed. Staying up late for a long time can lead to memory loss, poor concentration, depression, dizziness, headache and other manifestations, leading to a decline in immunity, coupled with eye fatigue, prone to conjunctivitis, keratitis, etc., and can induce cardiovascular disease, affect endocrine function and fertility, while increasing the risk of cancer. It is recommended that for physical and mental health, you should go to bed early and wake up early, and exercise regularly. If you can’t avoid staying up late, you can drink a glass of milk before staying up late, which is good for skin care. After staying up late, you should eat a reasonable diet, not to eat too cold, greasy food, take a warm bath after getting up to keep your mind clear and promote blood circulation, and pay attention to napping.