American scientists suggest the best time to drink coffee

According to a special feature of Xinhua Agency (Huang Min), for coffee lovers, some people are used to having a cup in the morning, and some people like to drink in the afternoon. A neurologist in the United States found that caffeine interacts with the hormone cortisol in the body to produce a better refreshing effect. According to the cycle of cortisol levels, the best time to drink coffee is 9:30 am to 11:30 am.

Cortisol is not only a stress hormone, but also helps regulate the body clock and improve alertness. Cortisol levels rise and fall, rise in the morning and fall about an hour later. Steve Miller, a neuroscientist at the Uniformed Services University of Health Sciences in Bethesda, Maryland, found that cortisol levels peak between 8 a.m. and 9 a.m. on average, indicating the highest alertness.

British "Daily Telegraph" quoted Miller as saying that when cortisol levels fall from high levels, drinking coffee is better because caffeine can promote cortisol production and better refresh.

"It's probably best if you drink coffee between 9:30 a.m. and 11:30 a.m., because that's when your cortisol levels are falling," he said.