I think deep down they know the deal. They're just trying to justify their laziness to themselves. I'm sure they are very envious of you but lack the will power to do anything about it. So instead they lash out at active fit people in an attempt to make themselves feel better.
I know...or when you bring your chicken and prepared meals to work and everybody always has some smart ass remark!! Just cause I dont eat fast food for lunch every frickin day!!
There is a fat ass, really not kidding big ass wide as tall load at my work, and a chick whos pretty fit. The wide load was trying to make fun of fit girl for eating brocolli.
wtf?