It is normal for people to feel tired in the process of fitness. Because of the reduction of human intake, the sugar concentration in blood drops and blood sugar drops. Sometimes people's physical strength will feel a little mental fatigue because there are some symptoms of hypoglycemia. You can have a blood test If it does not affect your health, it is very necessary to continue. In the process of fitness, due to the increase of consumption, fat is also in the process of decomposition, and people's fatigue is inevitable. This is also a normal phenomenon, but be careful not to be eager for quick success and instant benefit, but to be gradual.