A person can wake up regularly, which shows that his biological clock is working well. Specifically, the biological clock responsible for sleep and wake-up is called "wake-up clock", and regular wake-up can ensure its normal operation. Sleep is more important than eating. You can live up to 7 days without eating, 20 days without drinking, and 5 days without sleeping. From the perspective of health care, regular awakening is more important than sleep. After a night's sleep, you will naturally wake up in the morning. Because it is commonplace and "never", people are not surprised by this phenomenon, but feel dull. According to the theory of biological clock, there are many biological clocks in the human body that will change dramatically from sleep to wake up, such as blood pressure, body temperature, heartbeat, pulse and secretion of adrenocortical hormone, which will lead to awakening. Some people's "head clock" is quite accurate, and it takes almost the same time to wake up automatically every day. This is a good habit and should be adhered to.
Tip When you want to sleep, don't put off sleeping. Sleepiness is a natural sleep reminder. If you postpone your sleep time, the order in your body will be chaotic. Sleep whenever you want, and health will come naturally.