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Don't drink coffee when you just get up! Grasp two prime times to get rid of drowsiness.

Published: 2026-07-07 Author: World Gafei

Last Updated: 2026/07/07, Professional barista communication Please pay attention to the coffee workshop (Wechat official account cafe_style) Human beings have certain stereotypes about many laws of life, we must eat breakfast, be punctual for three meals, drink coffee in the morning, and so on. But according to Time, ASAP Science, a science video channel, says the morning is the worst time for coffee. Reason

Professional barista communication, please pay attention to coffee workshop (Weixin Official Accounts cafe_style )

Human beings have certain stereotypes about many rules of life. Breakfast must be eaten, three meals must be punctual and practical, coffee must be drunk in the morning, etc.

But according to reports, a science video channel, ASAP Science, says morning is the "worst" time to drink coffee. What was the reason?

In fact, this has something to do with the high cortisol index in the body early in the morning! Drinking coffee when cortisol levels are high causes two major problems:

First, caffeine interferes with the production of cortisol (a hormone released in response to stress and low blood sugar that gives you a boost), lowering your cortisol index. You need more caffeine to achieve balance. In short, it's replacing the natural caffeine in your body with caffeine in your coffee. It doesn't sound like a good deal!

Second, coffee drinkers who drink coffee early in the morning tend to develop a tolerance for coffee because cortisol's originally invigorating effect has been replaced, making people drink more and more to wake up well.

In fact, according to the 2009 NCBI study, cortisol levels peak at three times of the day, so excluding those three times leaves the best time to drink coffee between 10 a.m. and 12 noon and between 2 p.m. and 5 p.m.

Therefore, people who are used to drinking a cup of coffee every morning may have to adjust their coffee schedule so that they don't drink it for nothing!

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