There is a hormone called cortisol in the human body. Normal levels of cortisol (such as other glucocorticoids) help the body regain its balance under stress. Cortisol rises and falls in a 24-hour cycle, reaching a peak at 6-8 am, and maintaining a relatively low state from 10 at night to 6 pm the next day, because the body needs rest at this time and does not need a high cortisol level to maintain it. If the body remains at a high pressure level after a late sleep, the body will be forced to release cortisol. Long-term high cortisol levels will lead to increased blood sugar, obesity and increased liver pressure. Reduce the body's basal metabolism and hinder weight loss.
So we need to go to bed early, reduce cortisol in the body and improve the weight loss effect.