Experts believe that during the day three meals a day, the human body can get 300 to 400 milligrams of calcium from food, and some even more, when the body's internal calcium regulation mechanism through the calcium from the urinary discharge of calcium, the blood can always be supplemented from the food to maintain the level of calcium in the blood,
To the night, the human body to eat, and the urine as usual will be formed, a part of the blood of calcium Some of the calcium in the blood continues to enter the urine, so in order to maintain normal blood calcium levels, the body must not use the calcium reservoir - calcium in the bones. The result of this self-regulation in the body is that most of the calcium in the urine comes from the bones early in the morning. On the other hand, the various hormones that regulate blood calcium levels in the body are secreted in different amounts during the daytime and at night, and thus blood calcium levels are generally lower at night and higher during the day. The bottom calcium level at night can also stimulate the secretion of thyroxine to accelerate the decomposition of bones.
So, before going to bed and milk to supplement a part of the calcium, can be for the night of this bottom calcium regulation to provide a calcium source, blocking the body to use bone calcium, in addition, calcium and milk in some of the substances, are sedative, hypnotic effect. Can help sleep