Intermittent fasting is just a way to induce calorie restriction for people too lazy to count their calories, there's nothing special about fasting in itself. It's the calorie restriction that promotes cellular autophagy and fights insulin resistance. However calories counting is old and not trendy and doesn't sell books and programs. Fasting is also a good way to waste muscle tissue which is why lifters and athletes go with calorie tracking instead. Tracking also shows you when you have deficiencies in micronutrients that still happens when people don't structure their fasting properly.

Intermittent fasting is just a way to induce calorie restriction for people too lazy to count their calories, there's nothing special about fasting in itself. It's the calorie restriction that promotes cellular autophagy and fights insulin resistance. However calories counting is old and not trendy and doesn't sell books and programs. Fasting is also a good way to waste muscle tissue which is why lifters and athletes go with calorie tracking instead.