Not answering your question directly, but I don't think you can compare calorie restriction with fasting in that way. Over time, reducing calories by 15% just c

Not answering your question directly, but I don't think you can compare calorie restriction with fasting in that way. Over time, reducing calories by 15% just causes your body to lower its metabolic rate accordingly (see Biggest Loser contestants), while fasting turns off the digestive system completely, allowing the body to focus on other tasks. That's when you get benefits like persistent low insulin levels, autophagy, etc. In other words, if you have 1000 calories to eat over two days, you're better off fasting entirely one day and eating the 1000 calories in one meal the second day rather than many small snacks over the two day period.