Before going to bed and after going to bed weight is different, this is a normal physiological phenomenon, because before going to bed people may be in a state of satiety, which will cause weight gain. However, during sleep, the metabolic energy consumption process of the human body does not stop, the organs of the body parts are still in working condition, the gastrointestinal tract, liver and other internal organs need to operate, these will consume energy, resulting in the nutrients in the body, such as sugar, protein, fat content is reduced, thus causing a mild weight loss, which is a normal physiological phenomenon. The length of sleep in the human body is closely related to its sleep quality, and body fat, all of which can lead to a slight weight loss after waking up. High-quality sleep can stimulate the pituitary gland’s role in regulating the content of various hormones, and can also promote bone growth and development. After waking up, a person’s hunger is relatively strong, prompting the body to consume more nutrients, all of which help the body grow and develop.