Ive recently started doing "mini" fasts combined with a keto diet to shed a few pounds. I usually just eat one meal per day at dinner time. While getting started on it was somewhat difficult after about 7 days I was in the groove and feel like this is a diet/lifestyle that I can maintain indefinitely. My hunger has changed from "IM STARVING FEED ME NOW" when I was eating 3 meals a day on no particular diet, to "hmm I guess I could eat". Energy wise, I do feel a lot better, and Ive shed 25 of the 50 lbs I need to get off of me. I was never much of a sweet eater, so I think Im lucky, as my wife who does have a sweet tooth has struggled eating Keto.