So, is drinking instant coffee to lose weight an IQ tax? The answer is yes, not all IQ taxes.
Aside from the word "instant", let's see if coffee has the effect of losing weight.
Regarding the principle of coffee to lose weight, a mainstream saying is that "coffee can improve metabolism, thus increasing energy consumption".
This rumor is not nonsense. It comes from the research on the efficacy of caffeine at the end of last century and the beginning of this century. It is mentioned that caffeine in coffee seems to increase basal metabolism by exciting adenosine receptors in skeletal muscle and central nervous system, and may also increase heat production. However, the idea is beautiful, but the reality is not so ideal.
There is a serious bug in the theory of "improving metabolism and increasing energy consumption": it doesn't say how much it can be improved! That is, it consumes 1 kcal, 100 kcal and 500 kcal. Although they are all called "excessive", they are completely different concepts for weight loss.
Fortunately, a group of curious and rigorous scientists did more in-depth research. In early small sample studies, it was found that even if the single caffeine intake increased to 400 mg, many people might begin to experience uncomfortable side effects, such as palpitations. Within three hours after taking it, the energy consumption of the human body only increased by 40 kilocalories.
That is to say, even if you consume 400mg of caffeine, your body will consume a little more calories than half an egg in three hours, which is only equivalent to 2% of a normal person's total energy intake in a whole day, which is simply a drop in the bucket for the great cause of losing weight. Not to mention, most people don't drink that much caffeine. So the actual weight loss effect of coffee is really too small.
I found a systematic review published on 20 19, and summarized 20 17 and 3 randomized controlled trials related to caffeine weight loss published before. The results show that the weight loss effect of coffee ... is really lasting: insist on drinking 750 ml of coffee every day (calculated by 240mg of total caffeine), and only lose 0.20 weight after drinking for three months. So, if you drink less and spend less time, the effect may be worse, dear. Even if you eat less meals a day and walk more to lose weight, the effect is better than this.
Some time ago, I saw many friends cheated on a short video platform. In all kinds of net posts, it is claimed that drinking black coffee without exercise can "lose ten pounds in three days" and "lose eight pounds in half a month", which may be that the scale is broken. A friend of mine has been in contact with coffee for 4-5 years, drinking single product or Italian every day, never adding sugar or exercising, and now 190 kg. How to explain it? !
Some netizens also questioned whether it was the wrong time to drink coffee. It is said that drinking black coffee before exercise will have obvious effect.
Hmm (expressing hesitation, etc.) ... At present, there are indeed studies that drinking black coffee before exercise really helps to lose weight, because caffeine is the main force of fat-reducing supplements, and its main function is to refresh people's minds, make people concentrate in training, improve their excitement in a short time, and enhance their strength to break through the bottleneck in training. That's what I said earlier. Drinking coffee can reduce weight, and it makes sense.
In short, remember that losing weight means keeping your mouth shut and opening your legs. Coffee makes you open your legs longer and less tired. Therefore, to lose weight is not to drink coffee and eat junk food in bed, but to warm up for running and aerobic exercise after drinking coffee for half an hour. Understand that no pains, no gains, this truth is universally applicable, coffee can only help you refresh yourself ~
Finally, to sum up, the weight loss effect of coffee can not be said to be completely absent without exercise, but don't expect too much. If you expect to lose weight by drinking coffee without exercising, I think it's really too difficult for it.