I do exercise to keep thing ticking over. 5km jogs. You hear of people who experience feelings of well-being, even rushes of euphoria, to which they become addicted. Who *are* these people? Sport/exercise to me has always felt like being dragged around a field by a rabid bull. A necessary evil.
@Richard_Littler In common with a couple of other replies, I too don't enjoy exercise for it's own sake, but still enjoy disciplines which actively promote a mind-body connection. The thing they have in common is requiring the brain to get in on the activity. The 'better' feeling afterward is either from social contact with like-minded people, or it's as if my flesh fits my skeleton again and the nervous system has less to complain about. Not anything like the endorphins people talk about.