Ok, this will sound really weird, but I'm very conscious about how I tie my shoes. I once read someone saying that you could always tell a person was obese when they tied their shoes on the side (as if you couldn't tell otherwise).
The reason being of course that it is a sign the person had trouble bending over to tie the shoes and instead brings the foot over their opposite leg in order to reach. I used to be one of those people, so I very consciously bend over and make sure I tie them in the center.
Crazy how our minds work.