I certainly don't plan my meals around the idea that I need to fast, but I often go long periods without eating when I am fat-adapted. It actually makes life a lot easier knowing that I don't need to eat every two hours like I used to when I was primarily burning carbs. I have more even energy, I think clearer, my moods are more stable and I eat so much less often that it's kind of a relief.

Eating only during an 8 hour window just seems really gimmicky. I mean, if you ate nothing but birthday cake and ice cream for 8 hours, you sure as hell wouldn't lose weight, so I think it's a very misleading article. Besides, the headaches I'd have had if I went 16 hours without food when I was a sugar-burner would have knocked me flat in two days for sure!