We know that the great scientist Eddie lived to the age of 84. He sleeps four hours a day on average. Einstein, a scientist who also made great contributions to mankind, lived to 76 years old. He sleeps more than 10 hours a day on average. These two scientists were considered as long-lived old people in their time. According to their family's memories of life, although the sleep time of the two scientists is very different, the sleep quality is very good.
It seems that the effect of sleep does not depend entirely on time, and the quality of sleep is also very important. Therefore, whether a person sleeps well depends not only on the length of sleep, but also on the quality of sleep.
Generally speaking, we can evaluate our sleep quality from the following aspects:
One. Sleep, about 10 minutes.
2。 Deep sleep, long breathing, not easy to wake up.
Three. No or small nights, no dreams, and soon forget the dreams after waking up.
Four. Get up quickly, and get up in the morning in good spirits.
Five. Clear-headed, efficient, not sleepy during the day.
Chinese medicine has always attached importance to sleep health. There is a saying in Li Yu's Collected Works of Li Weng in Qing Dynasty: "The secret of keeping in good health is to sleep first. Sleep can restore essence, replenish qi, strengthen spleen and stomach, and strengthen bones and muscles. "
Modern medical research shows that energy can be accumulated again after sleep, and the energy consumed in one day's activities can be compensated to reserve new energy for the next day's activities.
Good sleep can eliminate the fatigue of the whole body, rest the brain, endocrine, substance metabolism, cardiovascular activity, digestive function and respiratory function, promote the growth and self-repair of human tissues, enhance immune function and improve disease resistance, which is very important for health.