Lead: Many friends are doing aerobic exercise to lose weight, but after a few days of exercise, they are shocked. Because they found that their weight did not decrease, but increased. At this time, they may be completely at a loss or give up exercise. The following small series will be given to these friends. After exercise, glycogen in the body increases and water stays. It turns out that it has no movement. Suddenly found that the weight gain after exercise is not mainly the increase of fat. The main reasons are the increase of glycogen and the existence of water in the body. During exercise, we consume muscle glycogen and liver glycogen. They are the first energy-supplying substances in exercise. Some data show that their total stock in human body is between 250 grams and 400 grams ... After exercise, due to the stimulation of exercise, the body generally stores more glycogen than before exercise. Before the competition, the common classic diet and exercise arrangements for professional athletes are as follows: 6 ~ 4 days before the competition, practice with high intensity and large amount of exercise, consume glycogen as much as possible, and 3 ~ 1 day before the competition, reduce the intensity and amount of exercise, and increase the consumption of sugary food. This arrangement can make the glycogen stored in the muscle increase by 1~2 times than before, and the endurance performance in the competition is also better. After exercise, under a reasonable diet, liver glycogen will be supplemented quickly. In the process of replenishment, the body will store a large amount of water according to the ratio of glycogen: water = 1:3 (this data is based on the widely quoted experimental data of University of Michigan 193 1 year, and recent research also shows that the correct value of this data should be 1:2.4). That is to say, if you store 100g glycogen in your body, you have to store three times more water, which means that the total weight has increased to 400g. Generally speaking, your weight seems to have increased due to the increase of glycogen and the storage of water.