Recently, there has been an upsurge of sleep slimming in Japan. The latest research results in Japan show that the main cause of obesity is insufficient secretion of growth hormone in the body. Growth hormone, abbreviated as HGH, is a natural hormone secreted by human body. Its main function is to promote the growth of bones and muscles, and at the same time accelerate the burning of body fat. The secretion of HGH will decrease with the increase of age, and will decrease rapidly after the age of 30, so the closer you get to middle age, the more bloated your body will be, and it will be difficult to maintain and even deform. Even if you keep your eating habits at the age of 20, it is still difficult to maintain your weight. HGH is secreted only at night, especially after 90 minutes of sleep. When the human body is sleeping, its function tends to be slow, but its metabolic function will continue, and the accumulated heat in the body can also continue to burn. The younger and healthier people are, the more active their cell metabolism will be and the more energy they will consume during sleep. So you can lose weight by sleeping. How to lose weight by sleeping is "regular": you can't eat for 3 hours before going to bed. You can't do exercise immediately after eating. At the same time, it is not appropriate to choose too intense exercise. You can do sit-ups and simple stretching exercises, preferably for more than 15 minutes every day. Is the method of sleeping to lose weight credible? How much thinner can you sleep? The reporter interviewed some experts and insiders. Sleeping to lose weight varies from person to person. Sleeping alone is not enough.