I would do aerobics at the age of 15. I had my first gym membership at 19 experienced a high and have been hooked since. I've tried to be disciplined. It's tough with working full time, and going to school.

I get to the point(I'm not there right now) where I am doing so well that I feel so high about myself. I get the endorphans going and I just feed off of that, further more it overflows onto the rest of my life.