We didn’t always have the option to eat all day long. Our hunter-gatherer ancestors would go days, even weeks, with no food yet managed to cope and survive under these conditions. Before the advent of agriculture 10,000 years ago food availability was highly unpredictable, in abundance in the summer and scarce in winter. Fasting has been a natural part of our evolution and practiced for millennia by all faiths as a means of “cleansing” the body and mind, yet today medical authorities warn us of the dangers of missing a meal (or even a snack).

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