Drinking coffee can improve some body's metabolic ability, and exercise can consume more calories. The premise is that you control your diet and exercise scientifically. If you do nothing, it is impossible to lose weight simply by drinking black coffee.
The principle of drinking coffee to lose weight
Caffeine is a well-known substance in coffee. Caffeine can promote metabolism, but this effect is very small. It is impossible to burn fat and lose weight without exercise and just drinking coffee.
Experiments show that long-term daily intake of 600 mg of caffeine can increase calorie consumption by about 100 calories, which can be said to be minimal. 100 calories is about equal to an apple or a banana, which is generally understood as not getting fat after drinking. So it is basically impossible to rely on coffee, and most people can't insist on drinking 6 cups of coffee a day.
The main function of coffee is to refresh and reduce swelling. For reducing fat, if you exercise, drinking a cup of black coffee before exercise can appropriately increase your exercise heart rate and make you in a better state of exercise. Moreover, the ability of coffee to improve metabolism can make you consume more calories during exercise. Of course, this promotion is very limited.
If you don't exercise, the function of coffee is to make your spirit better, and then it will help your body drain water.
Attention? The above is black coffee. Coffee with sugar and milk will only make you fatter. Caffeine metabolism is really not enough.
Drinking coffee before exercise helps to burn fat: black coffee can promote physical function, prolong exercise time, accelerate consumption and make weight loss twice the result with half the effort.
Drink coffee in moderation.
Coffee is a natural beverage with a long history, but a large intake of caffeine will have a certain impact on the human body: a large intake of caffeine will cause gastrointestinal symptoms, such as nausea, vomiting, gastrointestinal discomfort and so on; A study in Europe found that drinking coffee may be related to chronic atrophic gastritis; A large intake of caffeine can also cause blood pressure to rise and increase the risk of hypertension, so patients with hypertension should be more cautious when drinking coffee; Although coffee has a refreshing effect, it affects sleep after excessive drinking, and the resulting neuropsychiatric symptoms will also bring trouble to people.
From the above analysis, it can be seen that coffee is definitely not a simple matter of drinking a few more cups. A little carelessness will make coffee have an impact on normal life. Based on the principle of no side effects on human body, the daily coffee intake of healthy adults should not exceed 400mg of caffeine, and the coffee intake of pregnant women should not exceed 300 mg/d.