Fasting can take care your health :Diet tips

Fasting is primarily the act of willingly  abstaining from some or all food, drink or both, for a period of time. An absolute fast is normally defined as abstinence from all food and liquid for a defined period, usually a single day (24 hours), or several days. Other fasts may be only partially restrictive, limiting particular foods or substance. The fast may also be intermittent in nature. Fasting practices may preclude sexual and other activities as well as food.

In a medical context, fasting may refer to (1) the metabolic status of a person who has not eaten overnight, and (2) to the metabolic state achieved after complete digestion and absorption of a meal. Several metabolic adjustments occur during fasting, and many medical diagnostic tests are standardized for fasting conditions. For most ordinary diagnostic purposes a person is assumed to be fasting after 8–12 hours. Many of the metabolic shifts of fasting begin as absorption of a meal is complete (typically 3–5 hours after a meal); "post-absorptive state" is synonymous with this usage, in contrast to the "post-prandial" state of ongoing digestion.

Glucose is the body's primary fuel source and is essential for the brain's functioning. When denied glucose for more than 4–8 hours, the body turns to the liver  for glycogen, a storage form of glucose, to be used for fuel. A process called  glycogenolysis converts glycogen into a usable form of fuel. At this point, the body also uses small amounts of protein to supplement this fuel. This fuel will last for up to 12 hours before the body needs to turn to glycogen stored in muscles, lasting for a few more days. If glucose is still denied at this point, muscle wasting is prevented by temporarily switching to fat as the fuel source, meaning fat is converted into  ketone through catabolism. Ketones, while not sugars, can be used by the brain as a fuel source as long as glucose is denied.

Research suggests there are major health benefits to caloric restriction. Benefits include reduced risks of cancer ,cardiovascular diseases,diabetes insulin resistance, immune disorders, and more generally, the slowing of the aging process, and the potential to increase maximum life span. According to the US National Academy of Science, other health benefits include stress resistance, increased insulin sensitivity, reduced morbidity, and increased life span.

We have been use our stomach about averyday , why not give a rest to our stomach as well as can assume as balance diet. 8-12 hours is the perfect range of time to let the stomach have a rest for a day. But still no need to do everyday cause our body still need food for survival.