My parents had me start swimming lessons when I was 3 and martial arts when I was 6. My dad always made me do extra pushups and situps after class.
They also had me do skiing, golf, skating, sports camps etc...
Since my memory doesn't go far back beyond 6, "working out" has been part of my life as long as I can remember.
It feels odd NOT being in the gym.
Now it's just something I love doing and learning about as I go, (and deep down, I do enjoy it when someone comments on it)
There's also a strong history of heart and cholesterol trouble in my family, so it's nice being able to keep that in check to a certain extent.