My experience after a few years of OMAD fasting is that my body adapted really deeply. I don't get hungry (as long as I do eventually eat) and I have consistent energy levels throughout the day. If I know I'm about to do some long hike the next day (sometimes very long! 30+ miles) I try to eat extra the day before so I won't run out of energy the next day, which has also happened to me towards the end of a hike.