Avoid drinking plenty of cold drinks: the temperature difference is too Assembly strongly stimulate the gastrointestinal tract, leading to sudden contracture. Avoid fasting bananas: Bananas contain potassium, in addition to aiding sleep, but also contains a lot of magnesium, if fasting food, the amount of magnesium in the blood causes a sudden increase, while magnesium is one of the sensitive elements affect heart function. Avoid fasting to eat pineapple: Pineapple contains strong enzymes, fasting eat Shang Wei, its nutrients after dinner can be better absorbed. Do not Hecu morning fasting or eating garlic. Fasting vinegar alone will cause hyperacidity and Shang Wei; while allicin would gastric, intestinal irritation, causing stomach cramps.