What are the aspects of people's ability to tell time?

Look at your watch and guess what time it is. Half an hour, you must have guessed right. Let you get up at a certain time without an alarm clock, and you will do it. With a little training, everyone can do it, because human beings have established a biological clock in the body. Almost every activity of the human body has a series of complex and interactive rhythms: sleep rhythm, eating rhythm, and even the electric waves generated by the brain also show rhythms. There are mainly three kinds of human rhythms: the daily rhythm of the earth's rotation, the monthly rhythm of the moon's movement around the earth, and the annual rhythm of the earth's movement around the sun.

Perfect sense of time

Not only human beings are affected by these natural laws, but all animals and plants are also affected. Sometimes, the biological clock can accurately guess the time. For example, bean aphids can decide whether to lay eggs or hatch eggs according to different seasons of the year and the length of a day. The ability of this insect to adapt to the natural rhythm is wonderful. When the day is extended to 14 hours and 55 minutes, it will make full use of this abundant sunshine and hatch a vibrant next generation. When the days get shorter, it lays eggs.

People's ability to tell time includes both mental and physical aspects. Every 3 to 4 hours, you will feel hungry. Human brain cells have a 2-3-hour activity cycle, and even the process of dreaming is periodic. During sleep, even with eyes closed, the eyeball is still in a state of rapid scanning movement, even faster than the eyeball reaction when watching movies or TV. The accurate rhythm of the dream interpretation cycle can be understood by testing the eye movements during the "rapid eye movement period" during sleep. The results show that people's dream cycle is about 90 minutes.