There is a scientific basis for sleeping for 8 hours every day and dying young. This experiment was jointly conducted by the School of Pharmacy of the University of California, San Diego and the American Cancer Society, and lasted for 6 years. We observed1100,000 subjects aged from 30 to 102. In this experiment, the age, medical history and health status of the subjects have been taken into account and compared with those with similar physical conditions. Studies have shown that people who sleep only 6 or 7 hours a day have a much lower mortality rate than those who sleep more than 8 hours or less than 4 hours a day. Among them, people who sleep for 7 hours a day have the lowest mortality rate, even those who sleep for 5 hours have a lower coefficient than those who sleep for 8 hours.

1. How long does it take to sleep? The best period of sleep is divided into four stages: dozing off, shallow sleep, deep sleep and rapid eye movement sleep, with a period of about 90 minutes. According to the EEG during sleep, as long as there is enough deep sleep in 4-5 stages, usually 6-7 hours, the physiological function of the human body can be fully restored, the immune system can be strengthened and the energy can be fully supplemented. After 4-5 cycles of deep sleep, if you continue to extend your sleep time, you will not recover your energy, but will lead to long-term inactivity, wrong melatonin secretion, and listlessness the next day, which will also hinder your deep sleep at night and form a vicious circle.

Second, what should I do if I don't sleep well? Appropriate supplementation of nervonic acid is also helpful to the recovery of the brain and the quality of sleep. Menstrual acid is the core natural component of nerve fibers and nerve cells, which can directly act on nerve fibers through the blood-brain barrier to repair and communicate, regenerate damaged and detached protective films, dissolve necrotic tissues blocking channels, induce spontaneous generation and division of nerve fibers, and enable information generated by nerve cells and external information to be transmitted smoothly through nerve fibers, thus activating injury, pathological changes and dormancy.

To sum up, only with sufficient deep sleep can the physiological function of the human body be fully restored, the immune system be strengthened and the energy be fully supplemented. Prolonging sleep time may not make up for your lack of sleep. On the contrary, you can't get high quality sleep by staying in bed. This is harmful to the human body and even shortens the life span.