Usually, after eating ordinary food, it stays in the stomach for about two hours, and stays in the small intestine for three hours before being absorbed by the blood, while fruit and vegetable juice can be absorbed by the blood and distributed to various organs after entering the stomach for 20 to 30 minutes.
Commonly used vegetable juices are: carrot juice, celery juice, chinese cabbage juice, cucumber juice; Fruit juices include: apple juice, pineapple juice, pear juice, orange juice, etc. Just drink a small glass every day. If you eat too much meat, you can drink more, before and after meals or before going to bed.