It's outrageous! It turns out that drinking coffee is like swiping a credit card. It will be overdrawn.

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"drinking coffee is like swiping a credit card. If you use your body's energy quota in advance, you will overdraw at a certain time. "

People love coffee, perhaps because of its taste, or because the chemicals in coffee can have an impact on the nervous system, bring physical stimulation and sensory enjoyment, and make yourself simple and directly depressed in a world of mental stimulation. Briefly change the state of consciousness.

Caffeine, as a recreational drug approved by society, does not have any age limit. But maybe one day, like alcohol and prescription drugs, it will be locked in the backstage of cabinets and off-limits to minors.

A recent consumption survey in South Korea shows that more and more junior students buy caffeinated drinks (coffee, energy drinks, etc.) in their spare time, and the higher the caffeine is, the more popular it is among the students. But we also know that excessive caffeine intake by minors can affect development, but there is no law in the world that forbids minors from buying products containing caffeine.

Screenshots of the lines of the TV series "Strange lawyer Wu Yingyu"

Caffeine is not suitable for minors. One is that caffeine has the effect of activating sympathetic nerves, which can lead to a short-term increase in hypertension, which increases the risk of hypertension, which is not conducive to the cardiovascular development of children. One is that caffeine stimulates the activity of osteophagocytes. Long-term intake of caffeine will affect the production of calcium in bones, which is not conducive to the development of children's bones.

Minors should not consume caffeine for a long time, and the same is true for adults. Instead of providing energy, coffee may consume energy, which means that adults who consume too much caffeine for a long time will feel more and more tired rather than refreshing, according to a new study.

Like a credit card, every caffeine intake is like using the body's quota in advance. If you keep swiping it and don't "pay it back", it will reach the upper limit and can't be used any more.

Andrew Huberman, a neuroscientist and professor at Stanford University, calls it "sleep hunger". The longer this continues, it will eventually lead to the phenomenon that coffee doesn't work, that is, coffee burnout.

"isn't caffeine refreshing? Why are you still sleepy? "

So let's take a brief look at how caffeine makes us feel temporarily awake.

People feel sleepy because the brain secretes a substance called adenosine, which is an inhibitory neurotransmitter. When adenosine binds to another specific signal in the brain, the receptor, it makes people feel sleepy. The more adenosine binds to the receptor, the more sleepy people become.

When you take a sip of coffee, the situation in your brain is something like this.

(pink cushion deductive recipient cow cat deductive caffeine orange cat deductive adenosine)

Caffeine is not a substance that can pull the two of them to sway together. All it can do is walk up to the receptor in advance and prevent adenosine from binding to the receptor for a short time. The fact that adenosine does not bind to the receptor does not mean that the brain will stop secreting adenosine, because the body needs adenosine to help us reduce inflammation, regulate the beating of the heart, and help digestion.

The human body likes to sleep regularly, so the brain releases adenosine according to the 24-hour rule of day and night. If you force yourself to stay up late, you will feel more sleepy because your brain releases more adenosine than usual to help you fall asleep at normal time.

It's the same with coffee! The more caffeine you consume, the more adenosine, so the body is like being hollowed out, conscious, but like a soulless body, the body is very tired. There is no point in continuing to consume caffeine, which is coffee burnout.

Maintaining this condition for a long time will eventually lead to "drug resistance" in the body, caffeine will not stimulate the nerves, and people will only get more and more tired. More and more sleepy.

"then how can we avoid coffee tiredness? I still need it to renew its life! "

Adjust the rest time, adjust the coffee intake frequency and intake, is very important!

The half-life of caffeine is five hours, and it takes ten hours to wait for caffeine to completely expire. This means that drinking a cup of coffee five hours before you go to bed is equivalent to drinking half a cup of coffee before going to bed. So 5 hours before going to bed (preferably 10 hours), do not eat food containing caffeine (including coffee, cola, tea, chocolate, energy drinks, etc.), can effectively improve the quality of sleep. '

In general, adenosine takes time to fade in the morning, so getting up and drinking coffee right away is not refreshing. On the contrary, it will stimulate the production of more adenosine and keep you awake all the time. The best time to drink coffee is 90 minutes after you are awake, which will give your adenosine time to fade, and then drink coffee for a better pick-me-up effect.

Coffee not only keeps you focused and excited, but also increases your stress. So when you feel stressed, don't choose caffeine! It also causes the brain to produce more adenosine to regulate your heartbeat and ease your mood.

Coffee is not a panacea. When the body is tired, it needs to adjust and rest, rather than deceiving itself by stimulating the central nervous system and overdrawing its ability.

Just like the classic line in the old Hong Kong movie: if you go on a trip, you have to pay it back sooner or later! All things that are overdrawn need to be repaid in the end.

Good health is the most important thing!

Photo Source: Internet