Therefore, the first difference is that some animals and plants go into a lethargic state after their jealousy of life activities is reduced in harsh environment, and then wake up again after the harsh environment has passed. There are roughly two kinds of dormancy in the animal kingdom that grows as usual. One is hibernation in severe winter due to low temperature and lack of food, such as frogs and hedgehogs, which is also a common biological phenomenon in the animal kingdom. Besides age, animals and reptiles, many inorganic chasers and a few tearful mammals hibernate. Going to sleep on the other side is the need of life, so people can't live without sleep, and they have to make up for their lack of sleep every day, otherwise they will be punished. I really want to hold the same thing.
Then sleep is the need of life, so people can't live without sleep, and they have to make up for their lack of sleep every day, otherwise they will be punished. According to the results of the sleep meter, when normal people sleep, sometimes their eyes are inactive or just float slowly, which is a long time, but sometimes their eyes move back and forth quickly. This period of time is slower than eye movement or shorter tolerance time, and the old shops also have different changes. Scientists divide sleep into Aauto Quicker sleep and slow hand sleep. The basic rule of normal sleep is that normal adults enter here from shallow to deep in the early stage of sleep, and turn to REM after about 60 minutes to 90 minutes.