Going to the gym to exercise can lose weight, but only a small part. You must stick to it. I think it's not easy for everyone. The reason of obesity is 1. Heredity: If both parents are obese, the child has a 70% chance of obesity, and if one parent is obese, the child has a 50% chance of obesity. Of course, the eating habits at home also have a great influence. 2. Overeating: sweets, drinks, high-calorie foods, high oil, high sweetness, high protein and low fiber are also the main reasons for getting fat. 3. Insufficient exercise: If the diet is unchanged or the dietary calorie intake is too high, but the exercise is insufficient, it means that there are excess calories to be converted into fat storage, and over time, it will become fatter and fatter. 4. Midnight snack: People who eat supper or eat before going to bed for a long time are most likely to get fat. Because of poor metabolism and good absorption at night, it is easy to get fat. 5. Emotional diet: often because of emotional happiness or sadness, you can't help eating or overeating, which leads to excessive calories being converted into fat, and then gradually obesity. 6. Eating disorder of the central nervous system leads to eating all the time but can't stop, and it also presents obesity. 7. People with abnormal hormones, or women with abnormal hormone secretion, are also prone to gain weight. 8. Abnormal hormone secretion or use of drugs, such as adrenaline, thyroxine, insulin, etc. Or those who use steroid drugs may lead to obesity. Therefore, understanding the causes of obesity, seeing what kind of obesity you belong to, and taking the right medicine can make it easy and smooth to lose weight.