Obviously wasn't aware of it as a concept or have some strict rule I followed. Doesn't mean I didn't do it naturally. I would never eat until lunch my entire time at school around that age and very rarely after so that's 15-16 hours from 7/8pm the previous night without food.
I'm Scottish/Irish/A little Scandinavian just like you but have never been fat LIKE YOU HAVE LOL. Despite eating mostly junk my entire life. I figured it out intuitively (fasting) it felt better to avoid eating until I was really hungry, so I just stayed doing that.
