It should be healthier to exercise 40 minutes after drinking coffee.

Drinking coffee can improve the excitability of the central nervous system, clear the mind, increase the sense of pleasure during exercise, and improve people's agility during exercise, which is very beneficial to exercise. However, it should be noted that do not exercise immediately after drinking coffee, otherwise it will increase the burden on the stomach; moreover, caffeine will not be absorbed by the body until 40 minutes after drinking coffee. Therefore, it is best to exercise 40 minutes after drinking coffee.

But this is not to say that drinking as much coffee as possible before exercise is better. If you take too much caffeine, coffee becomes a stimulant. In large-scale international sports competitions, athletes who drink too much coffee may be disqualified because their caffeine content is too high to pass the illegal drug test.

Excessive consumption of coffee can also affect appetite, insomnia, vomiting, increase urine output, harm the bladder, and then cause urethral infections; lead to movement disorders, shaking hands or unclear speech.

So what is an overdose? Hu Yang said that like the small packaged coffee sold in the general market, it is not too much to drink one or two cups a day.