As the saying goes, 'When a person sleeps three times, his life is thinner than a piece of paper'. What three sleep are you talking about? What happens when you sleep?

As the saying goes: "If you don't listen to the old man, you will suffer in front of you". Sometimes, I have to admit, the experience summed up by the predecessors is often very reasonable. Now we have to pay attention to science, but we forget all the valuable experience of the past and call a qualified modern person, in fact, it seems a little short-sighted.

A person spends a third of their life sleeping. Only when we sleep well and sleep well, can our bodies be rested and restarted through sleep, so as to achieve the highest work efficiency and learning efficiency in the new day, and truly live a full and meaningful life. As the saying goes: "When a person sleeps three times, his life is thinner than a paper". Perhaps only by mentioning that he cannot live long can it attract everyone's attention. So what is the so-called harmful habit of "three sleeps"?

Can't sleep "upside down"

It can also be understood as "replenishing sleep", which may subvert everyone's cognition a bit. Occasionally stay up late, what happened to sleep the next day? In fact, if it's true "occasionally" staying up late, catching up on sleep the next day can actually make up for lost sleep, which is definitely better than not making up for it at all. In addition, when making up sleep, sleep efficiency will be higher than normal sleep. However, if you stay up too late, you have to brutally tell you that sleep supplementation really doesn't work. This is because you often stay up late and rely on supplementary sleep during the day. Your work and rest have been reversed, which can easily lead to a circadian rhythm that can do more damage to your body than the occasional late night.

Put "upside down" it is more suitable for those who often need to work shifts and jet lag. For example, doctors, nurses and some workers often work night shifts. Working hours are inconsistent with social routine work and rest time, and various sleep problems are prone to occur; there is also jet lag. When you travel to another city, the local time zone is different from the one you live in, but your body clock still regulates sleep and wake times to the original rhythm, which will lead to an inconsistency between the body clock and local time.

Can't sleep "meal"

Go to sleep when you are full. Does it sound like a second brother? Actually the reason I can't sleep is because of "meal sleep" that is, we can't sleep right after a meal, not because we're afraid of gaining weight, but because our gastrointestinal tract is still doing its best to digest. If we have to rest at this time, it will not only affect sleep quality but also digestion. It is naturally bad for health in the long run.

However, it is also human nature to be sleepy after a meal. Just like when we were in school, we were always lethargic in the first class every afternoon. This is mainly because after a meal, our body automatically secretes some hormones that act directly on the brain to signal fatigue and sleepiness. Of course, it's not just a few bites, it's often overeating, too much food inevitably has more fat or sugar, which can increase sleepiness. Therefore, it is necessary to eat seven or eight minutes per meal.

Can't "sleep in"

Sleeping in on rest days is common for the vast majority of people. Oversleeping and being late on weekdays are common, even for some people. In fact, getting a few extra minutes of sleep each morning isn't a bad thing. The key is to sleep less "recovery sleep". This is because, if you always need to sleep in a cage, even if you don't sleep one day, you will feel no strength and no energy, which directly affects your normal work and life, which indicates that you have a problem with the quality of sleep every night.

Many people's understanding of "sleeping soundly" and "sleeping soundly" is inaccurate. I think I can barely sleep until dawn. Sleep quality will not be a problem. In fact, there are four criteria for a good night's sleep: I can fall asleep within half an hour; I wake up no more than once halfway; I fall asleep within 20 minutes of waking up halfway; I spend 85% of my time sleeping in bed instead of playing with my phone, In a daze and so on. If your sleep meets the above criteria, then waking up on time should not be difficult for you.