Lack of sleep will make you fat. Some girls like to stay up late and have classes early the next morning, which leads to lack of sleep. Or Watergate, the day is too long, sleeping late at night, black and white upside down. Irregular and insufficient sleep can easily lead to obesity: scientific research shows that people who sleep less than seven hours a night are more likely to gain weight than those who sleep more than seven hours. Irregular sleep can lead to a series of physiological problems, including hormonal changes that regulate people's hunger. Lead to eating too much, so sleep must be guaranteed. A little more than seven hours' sleep every day is enough. Except for some people who are genetically not fat, most people are fat because of lack of exercise. They should go to bed early at night. It is better to go to bed at ten o'clock.