All the time, people have different opinions on coffee, and many people think it has no benefit on human body. As a result, this article will introduce five facts of coffee which are rarely known by people, so as to make you have a new understanding of coffee.

Fact 1: Drinking coffee moderately is good on the human body.
Doctors point out that, coffee both has advantage and disadvantage on the human body, and the key is to drink it moderately. The study conducted by U.S. biologists shows that, drinking 2 to 3 cups of coffee every day is beneficial to the health of the heart. What's more, if you are troubled by the problem of overweight, coffee can help you increase the metabolism of the body, and even reduce your appetite.

Fact 2: Drinking too much coffee will threaten human health.
Some experts believe that coffee can lead to high blood pressure, promote the contraction of blood vessel wall, so drinking too much coffee may lead to heart disease. However, some American experts believe that, the fatal dose of is 10 to 13 grams. This means you have to drink 23 liters of coffee each time, which is equivalent to more than 100 cups.

Fact 3: Coffee is a good friend of fitness.
Scientists at the University of Georgia point out that, drinking two cups of coffee every day can help alleviate the severe symptoms of muscle soreness after exercise. You just need to drink two cups of coffee after the exercise, which can promote the recovery of the muscles. Another advantage of the coffee is to build up the strength, so it can help you exercise more, and the effect of exercise will be better.

Fact 4: The caffeine contained in coffee is not much more than green tea.
Usually the amount of caffeine contained in a cup of coffee is as much as that contained in a cup of strong black tea, and the caffeine contained in green tea may be much more than that. As a result, in order to have a good sleep, you do not have to keep away from coffee before going to bed, but also should control the intake of tea.

Fact 5: Caffeine does not taste bitter.
The bitter taste of coffee is not caused by caffeine. The chemists have pointed out that, coffee contain some antioxidants which are beneficial to the health of human body, and this make the coffee have a bitter taste.