The main component of black coffee is caffeine, which can improve the excitability of the central nervous system, promote fat catabolism and delay fatigue. Caffeine, as a refreshing and anti-fatigue food, is widely used in people's lives.

Caffeine is a mild central nervous system stimulant, which can excite the central nervous system. After taking caffeine, people tend to be more awake and tired.

Coffee is widely distributed in skeletal muscle after being absorbed by human body, which can enhance muscle contraction and delay muscle fatigue. At the same time, coffee can directly promote the activity of lipase in adipose tissue, improve the rate of fat catabolism in adipose tissue, and help to reduce fat.

How to drink black coffee before fat reduction exercise?

The increase of catabolic hormone secretion during exercise will also promote the catabolic rate of fat in adipose tissue. Drinking a proper amount of coffee before exercise will have the same effect as decomposing metabolic hormones during exercise, which will better promote fat decomposition.

Studies have confirmed that drinking coffee before moderate and low intensity aerobic exercise can improve excitability, promote fat catabolism and anti-fatigue, but coffee has no obvious effect on high intensity short-term exercise ability.

Generally speaking, the human body ingests 250 milligrams of caffeine. After 15 minutes, the blood caffeine level began to rise, and reached the peak after 60 minutes, giving full play to the biological function of caffeine. However, excessive intake of coffee will cause gastric acid secretion, nervous anxiety, insomnia, increased excitement, palpitations and other adverse reactions.

Different people have different tolerance to caffeine. If you want to give full play to the beneficial biological effects of caffeine and avoid side effects, you should pay attention to your intake and ensure that it varies from person to person:

1, 1 A few hours before exercise, you can have some coffee and drinks;

2. The calorie of black coffee in the market is generally "1 kcal/100g", and the fat-reducing period usually requires long-term moderate and low-intensity aerobic exercise, so we need energy supplement. It is recommended to eat some low GI carbohydrates, such as whole wheat bread, yogurt, apples and beans.