[Acne] How can some people with absolutely terrible diets/routines/habits have flawless skin?

Beauty Tips For Body Care
So I've noticed this before. I've been around friends that eat an unending amount of fast food, go out and play some football/get sweaty, then go home and sleep in a bed that hasn't had the pillowcases changed in a month. No face washing, no routine, no special diet.Besides all of this, they have absolutely flawless skin. They don't even understand what a skin care routine is because they've never even conceived the need in their heads before. On the other hand, I think there's people like myself that can still get occasional acne even with a very healthy diet, routine, etc. what exactly is their body doing that others can't? Is this still a mystery? Do they have very little oil production, very good digestive system, or what?It really pisses me off sometimes...lol.
Girls Blog 2015
Submitted by Hencley