I'm still sleepy after drinking coffee. Is it out of date?

Want to sleep after drinking coffee?

There is a binding called adenosine in the brain, which sends a sleepy signal to the body when it is completed, and caffeine slows down the formation of this compound. And when the body does not absorb caffeine in time, after the body's digestion and blood circulation, coffee has no refreshing effect.

However, if you drink coffee regularly and let the brain adapt to the role of caffeine, the refreshing effect of coffee will also be reduced after the degree of excitement is reduced. At this time, you may want to consider increasing the amount of coffee or increasing the concentration of coffee beans. In order to achieve the refreshing effect. Doctors recommend that adults consume no more caffeine than 400mg every day.