The best time to drink light saline is when you get up in the morning on an empty stomach, and it is recommended to drink 30-50ml of light saline. It is not easy to drink light saline too late, if you drink light saline before going to bed will cause sodium retention, which will lead to paroxysmal hypertension at night when you sleep, causing sodium retention in the body to occur. The best time to drink light salt water is in the morning when you wake up, which is good for the body’s laxatives and for skin whitening. A glass of light salt water in the morning on an empty stomach can also effectively accelerate the peristalsis of the gastrointestinal tract, for the discharge of toxins and discharge of the body throughout the day and so on, have a very good effect and efficacy.