For me, almost entirely, yes, it's a direct alternative. If I eat a big lunch, then I need a nap, and if I eat a small lunch I don't. Maybe that's just me. A

For me, almost entirely, yes, it's a direct alternative. If I eat a big lunch, then I need a nap, and if I eat a small lunch I don't. Maybe that's just me. As far as whether it's better or not, if anyone can produce a study where eating more than you need is healthier than eating just as much as you need, nap or not... I think most research shows that eating less is a big deal. Funny thing is, until you challenged it, I'd never really rationalized it all. But now I'm seeing something bigger than "this makes me more productive". EDIT: I'm super curious why this would have been downvoted. Not offended at all, the opposite really, just curious what anyone found offensive here.