Do you exercise BECAUSE you are healthy, or are you HEALTHY because you exercise?

This is a 'chicken vs Egg" question. I started exercise in grade school, and am able to continue, hopefully, for the rest of my existence. Kind of a circular question. Any thoughts?

I have always exercised, and am able to continue because of it.
I was out of shape and overweight and exercise helped me get healthier
A combination of Genetics, healthy habits, healthy eating AND exercise to stay that way
Select gender and age to cast your vote:
Do you exercise BECAUSE you are healthy, or are you HEALTHY because you exercise?
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