1, fasting generally drink on the gastrointestinal stimulation of fruit and vegetable juice is better, such as carrot juice, celery juice, cabbage juice. Freshly squeezed juice is not sterilized by high temperature, basically no sugar and sweeteners, preservatives, nutrients are better preserved. This juice must be kept at a low temperature and consumed within a short period of time.

2, because people generally eat little vegetables and fruits for breakfast, so a cup of fresh fruit juice or pure fruit juice in the morning should be a good habit. It is important to note that, on an empty stomach, do not drink juice with high acidity, eat some staple food before drinking, so as not to upset the stomach. Whether it is fresh fruit juice, pure fruit juice or juice drinks, try to drink less at Chinese food and dinner. The acidity of fruit juice will directly affect the acidity of the gastrointestinal tract, a large amount of fruit juice will dilute the concentration of gastric digestive juices, fruit juice in the fruit acid will also be combined with certain nutrients in the meal to affect the digestion and absorption of these nutrients, so that people feel bloated in the stomach at mealtime, can not eat, after meals, digestion is not good, stomach discomfort. In addition to breakfast, it is also appropriate to drink fruit juice between meals.