The trick of sleeping
According to medical observation and my experience, a person really falls asleep for only two hours at most, and the rest is a waste of time, lying on a pillow dreaming, and no one does not dream. As for waking up and not dreaming, it's because I forgot.
Usually two hours' sleep alone is enough. Why do some people sleep for seven or eight hours? That's your habit of lying in bed with a pillow to rest. We don't need that long sleep time, especially those who meditate and do kung fu know that as long as you close your eyes and really fall asleep for three minutes at noon, it is equivalent to sleeping for two hours, but you should make good use of the noon time. At night, you must fall asleep in front of positrons. Five minutes equals six hours.
At this time, I learned a lot, with the laws of the universe, the laws of the earth, and the principles of the Book of Changes, Yin and Yang. And you will feel a force just coming down from under the heart and merging with the strength of the abdomen (kidney). The so-called "fire and water ji ji", all of a sudden, you get enough sleep and are full of energy.
Therefore, people who have insomnia or really want to stay up late at night must sleep even for 20 minutes at noon. If they can't sleep, they should train themselves to sleep. You don't want to sleep after about 12: 30, which is bad. What's more, at dawn, at four or five o'clock, at five or six o'clock, you are sleepy and want to sleep. If you sleep at this time, you will be sleepy all day.