Why do people let themselves go?

NerdyJock
Why do people let their selves go. Do they just not care anymore, does it not bother them that they gained 30lbs of fat. I know I'm young (turned 21 yesterday) but it's not that hard to stay in some what decent shape. Even on my busy days where I don't really have time to do anything I manage to exercise 20 minutes and on a college budget I manage to eat healthy. Do you think that people just get lazy, or maybe they just give up because life isn't what they thought it would be. Also I'm not just talking about gaining weight, just not taking care of their self.
Why do people let themselves go?
9 Opinion