"Although the fasting is not particularly beneficial, there is no major harm. From evolutionary perspective, human beings can endure longer fasting." Professor Claus, Susan, Germany. People who intend to fasting must be healthy, and the time cannot be more than one week. During the fasting, they should listen to the doctor's suggestion, children and pregnant women do not make up. Many foreign pedestrians believe that fasting will promote garbage cleaning in vivo, but Claus did not find this phenomenon. However, he guess that plant toxins deposited in adipose tissue can be released through fat during the fasting process. One of the points is that many changes have occurred in the body. The sugar stored in the liver and muscles can only meet the energy required for an adult day. There is a very much energy required by the brain; the brain consumption is 1/5 in the energy consumed during the rest. After a day, the body must fully manufacture the desired glucose. For this purpose, the body should first consume the protein stored in the muscle system. Biceps and abdominal atrophy, the hip fat is not reduced. After two or three days of fasting, the fat was consuming fat while producing a ketone body. The brain enables the ketone body as the source of energy. Thanks to the acetone in the era of ketone, this is the cause of the bad luck. The ketone body can also reduce hunger. After about a week of fasting, the fat consumption in the muscles exceeded the protein consumption, but it would not have to worry that fasting will lead to excessive physical weakness. "For ordinary people, fat can be consumed for two or three months." Professor Claus explained. Americans David. Brian accumulated a lot of fat before fasting stunt performance. When he entered the cage, the body mass index was 29 (more than 29 is obesity), and the body mass index was 21.6 from the cage, indicating that his weight is normal. The fasting can make people temporarily become slim, but its main role is to relax the spirit, make the thinking clearer, making people more confident. Fast fun is like it. Behind this beautiful feeling is just the role of chemicals. Hunger will change the new metabolism of the brain, while especially affect the "serotonin nervous system". The "serotonin nervous system" is a precision network that extends from all regions of the protruding portion to the brain, and can release the cell composed of cells composed of fast-sensitive hormone. "This is the whole brain to become harmonious, reduce the excessive excitement of some areas of the brain," Glarder, a nerve biologist, Gentiantang University, said. Animal experiment description, fasting directly affects the serotonin nervous system. A mouse with a reduced amount of fasting per day, the so-called serotonin transport in the cerebral cortex decreased by 1/3. Serotonin transporters are like a vacuum cleaner, and the form of material is absorbed. The fewer serotonin transporters, the greater the role of serotonin. Xu Speed estimates that observations of mice are also suitable for humans. Fast food is more harmonious by serotonin. The result is a mitigation of hunger, and the opposite is "the pleasure of a similar to the psychotropic drug" is enhanced. This pleasure will only appear in the case of resource fasting. "If it is forced to hungry, then the body will generate a large pressure hormone, leading to fear and panic."