I think you can train your body to deal with it. I used to hike a lot. I realized I felt a lot better while hiking if I didn't eat. I'd get up at say 5am, hike, and not need food until around noon before I bonked. It took work to get there. When I was younger, I'd get hypoglycemia if I didn't snack every hour or so. When I started hiking, I could go about an hour before I'd feel lightheaded. I got sick of it and started pushing through the wall. It was rough, then things started to change. After that, my eating habits changed even when I wasn't hiking. I got down to my ideal weight for the first time in my life at 40 years old.
That weight and the shape I was in allowed me to meet my wife. Unfortunately we like to eat garbage and now I'm back where I started at 47. It was a healthy 5 years though.