I've always been really athletic, which really helped, because when I first started doing the training for Bulletproof Monk, it required so much strength that if I didn't have a base I don't really know what I would have done.
Hopefully with each thing that you do you're learning something, you're growing, and you're pushing yourself a little harder in some way or another. So I think you'd be in real trouble if each new thing that you create didn't feel like 'Oh, wow. I feel like I'm doing something a little different thi