Quote Originally Posted by ny biker View Post
I don't understand this. Which is the slow twitch person and which is the fast twitch - the one who can "go forever and not run out of steam" or the "bunny rabbit"?
Slow twitch people are the ones able to "go forever" and fast twitch people are the natural sprinters. Muscles have both slow and fast twitch fibers, but some people may have "more" of one or the other. "Slow twitch people" is more of a generalization- some people are natural endurance athletes and can't run a fast sprint even with a lot of conditioning (and vice versa).

If you Google "fast twitch fibers" there are numerous articles available. There are also a lot of fitness routines that are supposed to help you activate one type of fiber or the other, but I have no idea how valid those are.