Is there some secret trick to avoid trouble the day after?
Once you go hot enough, this won't matter. But I guess it's part of the experience.
Maybe he has a better understanding of the risks and rewards than I gave him credit for.
Maybe if you just eat spicy food every day you'll eventually get used to it and not have that problem? I've eaten (what some may describe as) spicy food for probably more than 90% of the meals in my life and it doesn't bother me.