I agree. Anything that requires drastic lifestyle changes is unlikely to be followed for a long period of time. It's why fad diets come and go. They're often pretty extreme divergences from your pre-existing habits. Unless you used this technique briefly to get you down to a healthy body fat percentage, say 15-20 and then switched to an 18:6 to maintain. I could get behind that as long as the lack of food doesn't distract people from their work or anything like that.