Drinking water weight rise as a normal physiological phenomenon, does not mean that the body grows fat, the body’s neurohumoral regulation will be through diuresis will be restored to the normal state of weight. Normal people after drinking water, through the digestive tract absorption into the bloodstream, because the water itself has weight, in fact, weight gain for the weight of the water into the drink, is not usually what we call obesity, obesity is generally due to the accumulation of body fat, the two are not the same concept. When the water into the blood, the blood is diluted, the plasma crystal osmotic pressure is reduced, the hypothalamus of the nerve cells secretion of antidiuretic hormone will be reduced, the amount of urine increases, through the water diuresis, the excess water through the urine out of the body, the weight will be restored to normal. .