Of course it is good to drink at night, more helpful to lose weight at night do not need a lot of high-fat things, the morning should be eaten full of fruit and vegetable juice is rich in organic acids, digestive, but also to make the upper part of the small intestine is acidic, which is conducive to the absorption of calcium and phosphorus. At the same time contains a variety of vitamins, vitamins and inorganic salts can be supplemented to regulate the acid-base balance in the body. Drinking attention: 1, between meals or half an hour before meals is the best time to drink fruit juice. 2, fresh fruit juice should not add sugar, otherwise it will increase the heat. 3, do not heat. After heating the juice will not only make the aroma of the fruit to run away, more will make all kinds of vitamins suffered damage. 4, should not use juice to send drugs, or juice in the fruit acid easily lead to a variety of drugs in advance of the decomposition and dissolution of the drugs are not conducive to the absorption of drugs in the small intestine, affecting the efficacy of the drug. 5, ulcers, acute and chronic gastroenteritis patients and renal insufficiency of the people can not drink fruit juice.