How important is sleep?
If a person is active 24 hours a day and keeps working or doing things, then he is bound to be very tired, and due to lack of sleep, his heart rate and blood pressure will increase, which will increase the burden on his heart. Therefore, we often see people staying up late and dying in the news (sudden death is usually caused by acute cardiovascular and cerebrovascular diseases).
Not only humans, but also most creatures in nature have evolved the mechanism of sleep. Although scientists can't explain clearly why organisms evolved sleep at present, it is not difficult to find out through our own feelings that through sleep, we can recover our physical strength and eliminate fatigue, just like a fully charged battery, which can completely cope with a new day's work and life.
What are the hazards of insufficient sleep?
If a person often doesn't get enough sleep, there will be more or less physical and mental problems, such as irritability and bad relationship with people around him; Headache, memory loss, slow response, and decreased attention affect learning and work efficiency; In addition, for men, lack of sleep will lead to decreased testosterone secretion, which will lead to decreased sexual desire and even impotence; In addition, lack of sleep will weaken the body's immune system, and the probability of human infection will greatly increase, making it easy to catch a cold.
Lack of sleep has many disadvantages, and if you sleep too much, it is equally harmful. Generally, adults should not sleep more than nine hours a day, because people will be very tired after sleeping for a long time and even become lazy over time.
It is not advisable to stay up late. Early to bed and early to rise is good for your health. This is the simplest and most effective way to keep fit.