“Full not bath, hungry not wash your hair” has some truth, full bath may cause indigestion and other discomforts, hungry wash your hair may lead to dizziness and other discomforts, so do not recommend the full bath, hungry wash your hair. When satiated when a large amount of blood will be distributed in the gastrointestinal tract to help digestion, if this time to bathe will lead to vasodilatation of the whole body, a large amount of blood distribution in the body surface, leading to gastrointestinal parts of the blood supply is insufficient, and then cause indigestion, so satiated time should not bathe. In the hungry state is easy to appear dizziness, palpitations and other hypoglycemic conditions, and washing the hair may appear stooping low action, and washing the hair also need to a certain degree of consumption of human body heat, it is more likely to appear dizziness and other situations. So it is not advisable to wash your hair when you are hungry. Therefore, it is not recommended to take a bath or wash your hair when you are full and hungry, and it is recommended to take a bath or wash your hair after eating for 2 hours.