Rhonda Patrick· PhD
Other than that, I think the idea of fasting is ingrained in evolution. Just like in circadian rhythm, the animals have access to food only during their awake time which can be less than 12 hours, and also for diurnal animals, which are hunter-gatherers, the only time, actually, they have to hunt is twilight time because if you ever go to Savannah, or any of the African countries where there is still wild animals, or if you go to even a zoo, then you know that animals are not active in the middle of the day. They're mostly active during morning and evening. So in nature, animals actually have only two chances to eat, and the rest of the time they're fasting.