Sleep positive and negative views: 1, intermittent “snooze” than a long sleep Sleep has two different phases, namely slow-wave sleep and fast-wave sleep, respectively, accounting for 75%-80% of total sleep time and 20%-25%, the two interchangeable, 4-6 cycles per night. The so-called snooze is actually the first cycle of slow-wave sleep, which is shallow and accounts for only 5% of total sleep time. Adequate slow-wave sleep promotes growth and physical recovery, while adequate fast-wave sleep promotes brain recovery. It can be seen that to make both brain and physical strength to recover, must go through a long sleep, “snooze can only solve a moment of physical labor”. 2, early to bed and early to rise is a good habit for health people have a variety of different types, sleep is also the same. Because of the different occupational environment, personality or physical differences, there are early to bed and early to rise type, early to bed and late to rise type, there are late to bed and early to rise type, late to bed and late to rise type, it does not matter. As long as the sleep can match your physiological rhythm, so that people can wake up refreshed, clear-headed, action, fatigue, this sleep is a good habit for health. 3, the actual sleep time of the sleeper often exceeds their own feelings Many insomniacs say they “stay up all night”, but this is not true. From the sleep electroencephalogram, we can see that they just have a long period of slow-wave sleep, stage 1 and 2, and they can still maintain a certain response to the stimulation of the external environment, so they think they have not slept all night, which is called subjective insomnia in medical science. In fact, due to the fear of not being able to sleep, insomniacs tend to be highly nervous and overly concerned about changes in the external environment when falling asleep, such as the sound of the pendulum in the room, the sound of footsteps outside the door, etc., feeling allergic to the subtle movements that some people do not pay attention to overly exaggerate, and over time, they will feel sleepless all night. 4, drinking can help sleep Occasional moderate drinking may help sleep, but long-term or excessive alcohol consumption can cause insomnia. Because although ethanol has a certain sedative-hypnotic effect, but the duration is short, about 3-4 hours will disappear. After the hypnotic effect disappears, there will be symptoms of sympathetic excitement such as rebound heartbeat and shortness of breath, but it is easy to wake up and even insomnia. In addition, long-term heavy drinking will increase the body’s tolerance to ethanol, and must constantly increase the amount of alcohol consumed to achieve a brief hypnotic effect, followed by more serious insomnia. There are many methods of hypnosis, drinking can not fundamentally solve the problem of insomnia. 5, the environment of sleep should be absolutely quiet The impact of the environment on sleep is not only a matter of habit, but also its neurophysiology. If the cerebral cortex is stimulated too much or too long, or monotonous repetition, it will make the excitatory activity of the cerebral cortex turn into inhibition, making people sleepy. Therefore, the monotonous and rhythmic rolling sound of train wheels during long trips, the sound of raindrops on a quiet spring night, all have a hypnotic effect on sleep. Of course, if the consciousness of desperately want to sleep is too strong, these sounds in the ears, but will not be able to sleep again. This shows that people’s requirements for the sleep environment is easy to people. 6, dreaming can affect the rest of the brain The reason why some people feel more dreams, some people feel less dreams, mainly depends on in which sleep phase wake up. If you wake up in the fast wave sleep phase, you can remember your dreams, and if you wake up in the diffuse wave sleep phase, you will rarely remember your dreams. Those who think they have dreams all night long simply confuse dreaming when they first fall asleep with dreaming before they wake up, mistaking them for dreaming all the time. Moreover, despite dream after dream, sleep is always continuous and uninterrupted. Dreams are physiological phenomena that occur during sleep, and we do not need to worry about excessive dreaming.