Water is the source of people’s life, the first glass of water every morning to maintain human health role is more significant. The following is a list of the four benefits of the first glass of water in the morning, as well as precautions. The four benefits of the first glass of water in the morning] 1, replenish water: when sleeping at night, the body will consume a lot of water through urine, skin, breathing, etc., will be in a state of dehydration after waking up, and drink water in the morning to replenish the body’s metabolic loss of water. 2.Prevent constipation: Drinking water in time after waking up can promote gastrointestinal peristalsis and prevent constipation. 3, regulate the stomach and intestines: after a night of metabolism, the body’s stomach and intestines have been emptied after waking up in the morning, when drinking water can dilute the stomach acid, so that it remains in a better state. 4, make the brain awake: water will increase the blood volume, promote blood circulation, so that the human brain quickly back to awake state. How to drink the best? 1, fresh plain water is best. Research shows that the calcium, magnesium and other minerals contained in plain water is very helpful in the prevention of cardiovascular disease, more suitable for the elderly. In addition, plain water does not have any heat, without digestion can be absorbed by the body, so that the blood is quickly diluted, promote blood circulation, so that people are more quickly awake. 2, middle-aged women choose honey water. The USDA Human Nutrition Center study found that honey can prevent osteoporosis caused by calcium loss in middle-aged and older women. The fructose and glucose in honey can also be quickly absorbed and utilized by the body to improve fatigue symptoms. Honey should be mixed with warm water right, too hot water will destroy its nutrients. 3, constipated people drink some light salt water. Light salt water can stimulate intestinal peristalsis and help smooth bowel movements. But need to be especially reminded that no constipation symptoms, especially people with high blood pressure is best not to drink, the morning is the first peak of human blood pressure, drinking salt water will make blood pressure higher. In addition, drink light salt water after waking up, will increase the body’s salt, aggravating the phenomenon of dehydration, so that people feel dry mouth. 4, bad skin, drink some lemon water. Drink a glass of warm water with fresh lemon slices every morning on an empty stomach, can play a whitening effect. 5, fruit juice, carbonated drinks are best not to drink. The first cup of water to drink juice, can not provide the body’s most needed water, but will increase the gastrointestinal burden, not conducive to health. In addition, carbonated beverages in the metabolism will accelerate the excretion of calcium, but also easy to make the body dehydrated. 6, milk is not the “first cup”. Drinking milk on an empty stomach is just “through the intestines”, the stomach is too late to digest, the small intestine is too late to absorb, the nutritional value of milk is not reflected, there are people with gastrointestinal flatulence and other reactions.