For millions of people across the world, regular fasting is commonplace and has been part of spiritual practice for thousands of years. But before that, fasting was simply a way of life. With no storable grains, and few other foods that stayed fresh for very long, most of our ancestors experienced both feast and famine on a regular basis. When game was scarce, seasons changed, or the pickings were slim, hunter-gatherers did without. Eating all the time is not normal.
