I mentioned before that there might be a genetic role in athletic performance ... but now it looks like the pure motivation to be active might lie in your DNA as well!
The same scientists looking at the athletic ability gene have found genetic markers in mice that also influence the natural inclination toward activity. This might help understand the roles that genetics and brain chemistry play in motivating humans to exercise ... or stay on the couch :)
I would like to officialy go on record and blame my parents for giving me the laziness gene. It's so nice knowing I can just stay here on the couch forever, now that I know its not my own fault.