Fasting is a new way to lose weight advocated by British doctor michael mosley. He eats normally for five days a week, and only eats 500 kcal (for girls) or 600 kcal (for boys) for the other two consecutive days.

500 calories of food is equivalent to two fried chicken legs or a bag of French fries or two croissants.

Fast food is simple, does not need exercise, just needs dieting, and is the first choice for lazy people to lose weight.

Fasting contributes to health and longevity, because in ancient times, due to lack of food, human beings had a full meal with an empty stomach. After millions of years of evolution, cells use energy to accelerate division when energy is sufficient, and start self-repair function when energy is insufficient. Such a cell division mechanism helps individuals to grow rapidly.

However, now that there is enough food, the cells are already in a state of division and there is no time to repair them. Causing disease and cancer.

In addition, the number of cell divisions is limited. The more times a cell divides, the shorter its telomeres will be. When the telomeres are short enough, the cell can't divide, which means the end of life. Hunger can just slow down cell division, thus increasing life span.