Is coffee really refreshing? is coffee refreshing true or false?

The refreshing effect of caffeine in coffee can last for more than seven hours, according to a new study. So it's easy to have coffee after 6 p.m., resulting in an hour less sleep at night. If you drink coffee very late, it will cause the biological clock to be out of order.

So when is the best time to drink coffee? Some neuroscientists have calculated the best time to drink coffee. That is to say, at the time of 9: 00 / 11 / 11 / 30 in the morning every day. Because there is a rich hormone cortisol in coffee, it is very good for the body to regulate the biological clock. Cortisol levels peak shortly after we wake up, with an average peak between 8: 00 and 9: 00 in the morning, and the peak lasts for up to an hour. Experts think that drinking coffee after this peak will be very good because it can boost the production of cortisol when its content decreases.

What is the effect of drinking coffee besides refreshing?

The caffeine contained in coffee is also often used as a drug in clinical medicine, such as cold medicine, caffeine is used to assist in analgesia. But when it comes to self-care, the caffeine in coffee can help you avoid migraines. Professor pointed out: "Migraine is caused by cerebral vasodilation, when there are certain signs, drink a cup of coffee, caffeine vascular shortening effect can be useful to avoid migraine."

What will happen if you drink too much coffee?

Once there was a middle-aged woman who sat at work for a long time and drank coffee became her habit. later, she always felt a pain in her waist and legs. As soon as she went to the hospital, she was diagnosed with osteoporosis. Why are coffee drinkers more likely to suffer from osteoporosis? Jin Hui said: "drinking coffee often will affect the absorption of calcium, and on the other hand, it will throw away more calcium than people who do not drink it." Third, coffee contains caffeine, some coffee will also add sugar, which has a certain diuretic effect. " However, it is only in the case of excessive calcium that calcium is lost. In foreign countries, studies have shown that it is necessary to drink more than 10 cups of black coffee a day in order to lose calcium in the body.