im sure u heard of fast twitch and slow twitch fibers, and that every one is born with
a certain ratio of each, what i was wondering does any one kno the ratio of fibers, a 400m runner is born with or a 5k runner?, usually the ratio of fibers u are born with is goin to determine what ur best event is goin to be, but im curious if any one knows the range of percentages the these athletes are ...