"Get up! Sleep again and you will become a big fat pig! " Will you get fat if you sleep too much? Professor S. taheri of Bristol University in England definitely disagrees. He recently reviewed and integrated many studies since 1992, and once again affirmed: "If you want to lose weight, please ensure adequate sleep".
"Sleep more, don't exercise! Of course it will be fat. " My daughter pointed to the biggest dragon carp in the pond and really didn't move. She stays in the corner all day except floating to eat feed. "Yes! If you don't move, you won't burn fat, of course you will be fat! " My wife is proud of "finally finding your mistake this time"
"Eat well, sleep well and eat well" is almost equal to "fat", but this is the idea of "taking it for granted". Scholars in France, Japan, Spain, Britain, Germany, Japan and the United States in 2000, 2002, 2008, 2008 and 2008.
Sleeping less than 4 hours a day is the easiest way to get fat.
How can we prove it? In 2004, Gan Weiqi, a researcher at Columbia University, analyzed the obesity and average sleep time of 65438+8000 volunteers aged 32 to 59 in 1960s. The results show that people who sleep less than 4 hours a day are the most likely to gain weight, which is 73% higher than those who sleep normally. Sleeping for only 5 hours increases the risk of obesity by 50%, and sleeping for 6 hours increases by 23%.
"This is just statistics! It may be a coincidence or it may be deliberately filled in data. " My wife's questioning spirit is as dedicated as my thesis oral exam professor. The verification step of medical academic research is usually to find out the general direction through statistics and epidemiology, and then find out the actual mechanism. Epidemiological investigation seems to be insufficient to convince the public. In 2004, the University of Chicago found 12 healthy men in their twenties to do experiments. As soon as these thin people reported for duty, they took a tube of blood to check the contents of leptin and ghrelin in the subjects. Hunger hormone is secreted by cells in the bottom of stomach and pancreas, which can increase hunger and promote appetite. Leptin is secreted by adipose tissue, which can promote satiety and reduce appetite. The two effects are opposite.
I only sleep for 4 hours. I like sweets and biscuits.
The experiment started, and 12 people were asked to sleep only 4 hours in 1 day. I stayed up late for two days in a row and couldn't sleep. The torture was over. Then the subjects were asked to sleep 10 hour every night and draw blood again after two consecutive nights. The results showed that the amount of ghrelin only sleeping for 4 hours increased by 7 1% compared with that sleeping for 10 hours. The researchers also placed a pile of food after the subjects woke up. In this way, the chances of choosing sweets, biscuits and cakes after only four hours' sleep are much higher than those of choosing fruits, vegetables and dairy products, so you can imagine how hungry they are. "No wonder my father didn't sleep at night and ate all my cookies and sweets like a little mouse." My daughter was more or less persuaded. "Only 12 people, too few!" Madam is still not satisfied. Fortunately, in the same year, Stanford, Bristol and the University of Wisconsin recruited 102 people and conducted similar experiments with similar results.
"Why does that man have to feed if he doesn't sleep enough?" My wife asked a question that has not been clearly answered. Many functions of the human body are mostly designed for survival and reproduction; Scientists speculate that endocrine functions related to sleep should have existed in ancient times. Generally speaking, the days are long and the nights are short in winter, so it is difficult to feed and sleep longer. At this time, the secretion of hunger hormone is reduced, so humans don't have to eat so hard; On the contrary, in summer, when the active days are long, people can try their best to find food and store fat for the winter. In addition, the operation of human brain needs to be maintained by sugar. When the brain is sleepy, it will naturally send a signal to feed.
Children who don't get enough sleep tend to get fat when they grow up.
"Only adults would do that?" Later, Japan surveyed 8274 people, Germany surveyed 6862 people, and Britain surveyed 8234 people, all children aged 5-7. The results show that the risk of obesity caused by lack of sleep is more serious than that of adults. Children who sleep less than 8 hours are even four times more likely to suffer from obesity in their lifetime than children who sleep more than 10 hours. At the age of 3, the sleep time is less than 10.5 hour, and at the age of 7, the probability of becoming a little fat person is high.
Scientists speculate that children's growth hormone secretion is more vigorous than that of adults, and it is secreted at night. Growth hormone breaks down fat. If you don't get enough sleep, you will secrete less growth hormone and accumulate more fat. Children do not "grow vertically" but "grow horizontally". This endocrine explanation is a bit dull, and my daughter often yawns. "Go to sleep!" ""no, I want to gain weight! "The daughter said and took out the game machine." Didn't you say I was too thin? "