You can take a bath 30 minutes after eating, because taking a bath immediately after eating will cause a series of adverse reactions in the body, which is harmful to the body: first, such as bathing just after eating, at this time the blood will accumulate and concentrate in the gastrointestinal tract, so the amount of cardiac blood return will be relatively reduced, and the lack of cardiac blood return in the limbs will produce the situation of cardiac ischemia. Therefore, bathing immediately after eating will aggravate the symptoms of inadequate blood supply to the heart, leading to coronary atherosclerotic heart disease, myocardial ischemia, unstable angina and a series of diseases. Second, the interval after eating 30 minutes after bathing, when the stimulation and burden on the gastrointestinal tract is relatively reduced, at this time bathing try to avoid excessive acid reflux and lead to gastrointestinal discomfort symptoms. Third, 30 minutes after the meal bath, at this time, blood sugar is the highest peak concentration of the moment, this time bath can avoid the bath time is too long and produce the situation of hypoglycemic reaction.