I'm also a somewhat intermittent intermittent faster. Been doing it for about 4 years now. Weekdays I bike commute ~1 hour on just coffee, and don't eat until lunch. Took about 6 months to a year to really get used to it, but now I'm never hungry in the mornings. At first I did it for weight loss and potential fat utilizaiton increases but now its just continued for general convenience and easy calorie restriction. I also will force myself to eat something before a long ride but have also gone out for 3-4 hour easier rides fasted without any detriment. I always carry a gel in case of a bonk but it doesn't really ever happen.