Two illegal drug ingredients-sibutramine hydrochloride and phenolphthalein were detected in this weight loss coffee. Sibutramine is a banned drug in food and health food. Common in all kinds of illegal weight loss products. Its main function is to suppress appetite, but its side effects are great, from anorexia and insomnia to liver damage and even death.
Caffeine can eliminate drowsiness because it can block an inhibitory neurotransmitter called adenosine. Caffeine can reduce their effects. The original function of adenosine is to promote sleep, slow down the heart rate, cause pain, promote blood circulation and reduce the blood flow rate of the kidney.
Because caffeine can block the "sleep-promoting" effect of adenosine, it can play a refreshing role and is exciting. In other words, the principle of "taking caffeine to refresh yourself" is to artificially block natural drowsiness through caffeine. The function of caffeine is to trick the brain into noticing natural drowsiness.
A cup of "bullet-proof coffee" in the morning is a way to lose weight from the west, which is said to be very sought after by the elite in Silicon Valley. Its inspiration comes from Tibetan butter tea, and its name may be borrowed from the Hollywood movie Bulletproof Monk, which can actually be understood as American black coffee+butter/coconut oil.
Some also add some protein powder. The principle is the same as the "ketogenic diet" boasted by some people. It is a high-fat and low-carbon water energy supply mode. Ketogenic diet has obvious side effects, such as anxiety, irritability, constipation, alopecia and nutritional imbalance, which can lead to ketoacidosis in severe cases. Therefore, a ketogenic diet without professional nutrition guidance does more harm than good.
In fact, hot coffee is more refreshing. The low temperature of iced coffee will cause the contraction of intestinal mucosa and capillaries, and delay the absorption of caffeine by human body, so it can't refresh quickly. At the same time, the increase rate of caffeine concentration in blood of iced coffee is slower than that of hot coffee for a period of time. If you want caffeine to work as soon as possible, it is better to drink hot coffee.
After drinking coffee, caffeine began to work gradually. The concentration of caffeine in blood will be only about half of the highest value in two and a half hours to four and a half hours. For the elderly, this time is about 4-5 hours.
Caffeine has the functions of reducing fat accumulation, accelerating body metabolic rate and increasing heat consumption, which is very beneficial to reducing fat and slimming. Many studies have proved that drinking coffee can stimulate adrenaline secretion and stimulate adipose tissue to release fatty acids, which can work for the body like fuel. Overweight people can increase fat burning by 65,438+00%, while in thinner people it can be as high as 29%.
Drinking too much coffee is not good. The advantages of 3-5 cups (standard coffee cups) a day outweigh the disadvantages. Coffee with sugar or milk cover and biscuits with coffee are all high-energy foods, so we should pay attention to proper control. The time and way of drinking coffee is also very important. Drinking a cup of black coffee half an hour before fitness is helpful to improve the exercise effect. After drinking coffee for 30-40 minutes, the concentration of free fatty acids in the blood will become higher.
At this time, through proper exercise, fatty acids can be converted into heat energy, and fat can be burned effectively, which can still reduce fat and consume energy 3-5 hours after exercise. Instead of drinking coffee continuously to refresh yourself, it is better to wait until the "blood concentration" of caffeine is reduced by half or even lower.
This is the most effective way to ingest caffeine. Proper time can not only make efficient use of caffeine, but also ensure that it does not affect sleep. Excessive caffeine intake will not only block drowsiness, but also increase the number of times to get up and go to the toilet, thus further reducing the quality of sleep. Therefore, try to avoid drinking coffee and caffeinated drinks in the evening and evening.