Before taking a bath without eating anything, there is no food in the stomach, high-temperature bathing can stimulate blood circulation throughout the body, accelerate intestinal peristalsis, and consume more energy in the body. When the body does not have enough energy consumption, excessive hunger may cause hypoglycemia. The lowering of blood glucose can also easily cause energy metabolism disorders in the peripheral organs of the body, which can easily lead to dizziness, cardiac arrhythmia, nausea and other uncomfortable symptoms. When the body suffers from chronic digestive diseases, such as chronic gastritis, gastric ulcer, and duodenal ulcer and other chronic digestive diseases, fasting bath can aggravate gastric discomfort, resulting in aggravation of the disease. Because the body’s blood circulation accelerated under high temperature bathing, can stimulate the stomach and intestines, stomach and intestinal peristalsis accelerated easy to increase gastric acid secretion, easy to lead to aggravation of the disease. Therefore, if the daily habit of bathing on an empty stomach, need to be corrected in a timely manner to avoid discomfort caused by bathing.