Scientists discovered that each DNA ends with a tail that carry no information: it was considered to be simply junk, until was noticed that it becomes shorter with each dividing of cells, and when this tail finishes, cells divide no more and the person dies. Reducing calory intake by one quarter, shortening of this tale slows down, it means, the life span of person becames longer. But it is not possible, because after some time a person becomes too weak. But further experiments proved that same result can be achieved by fasting for 1,5 day once or twice a month. (and best day for fasting is the 11 th day of moon calendar. from ancient times people where fasting on this day, called Ekadashi (means “Eleven”). but to get the favorable spiritual result you should brake the fast on calculated time next morning (i always look the special online calendar). it is actually very powerful. i always feel the difference when i fast that day or skip.