I don’t think I’ve ever turned down food. A taste? A bite? A free sample at the grocery store? Bring them on. I like food and there's nothing wrong with that. But when I'm jonesing for a snack a mere 45 minutes after lunch? That's just a distracting annoyance. I'm an active guy, maybe my early morning workouts were the problem. Perhaps I wasn't eating a big enough breakfast? But after some research and speaking with a nutritionist, it's clear that I was simply making poor lifestyle decisions. To help my fellow ravenous snackers, we've pulled together the most common, scientifically backed reasons why we find ourselves constantly hungry. And to get you on the right path, we've paired each with a proven fix to fill you up and keep you on track instead of casing the office kitchen in search of scraps—not that I know anything about that.