There are four main reasons for gaining weight in winter: 1. In winter, women have thick coats, scarves and hats, and they also relax their vigilance against fat. 2. It's cold and there is less exercise. In winter, because of cold and laziness, sympathetic nerves will become dull and energy consumption will decrease. Excess energy in the body will be converted into fat, which is easy to be obese. 3. Eating snacks in winter Although you also eat snacks in summer, snacks are the chief culprit in winter. Because it's cold outside, if you don't leave home, you just hold snacks and never leave the TV. The extra calories brought by snacks can't be consumed. It will naturally accumulate into fat. The calories of snacks are as high as candy, and the calories of a bag of French fries are almost equivalent to the calories of a dinner! Men and women slimming original article 4. Physiological reaction caused by cold In winter, when the weather is cold, people's activities decrease and their appetite increases. At the same time, in order to keep out the cold, human fat cells began to accumulate gradually. At this time, because of the good tissue structure and strong chemical activity of fat cells, the human body is prone to obesity. In addition, the loose and heavy clothes in winter are also one of the reasons, which makes people relax their tension and vigilance against fat, so they get fatter every day.