The body requires a period of no food intake (12-16 hours) for organ repair and rejuvenation.

“So that's why we need to stop eating. But then the question is, if our brain needs only seven to eight hours of sleep, why do we need 12 to 16 hours of no food? And the answer is when we eat, it takes at least five hours for our stomach to digest that food. And after five hours, then our intestine might take several hours to absorb nutrients, some of the nutrients, and then send them to our liver and other parts of the body. So that means if you finished your dinner at 6:00 in the evening, then your stomach is still working until 11:00 pm or even later, so it's not actually getting to sleep, or repair, or rejuvenate itself.”

“So that means how many hours you are not eating, you subtract at least five hours from that, that's the number of hours your organs are resting, preparing or sleeping. So that's why if we eat for 8 to 10 hours, then we give our organs some rest for 16 to 14 hours, and that translates to roughly 8 hours of really no digestion, no nutrition interconversion, and that's the time our organs are getting to repair and reset, rejuvenate.”