I was always athletic. In elementary school, I did well in the 100-metre sprint, triple jump, and 800-metres. I beat the fastest girl in my year by a second and I remember hearing someone comment later on that I got lucky. I shrugged it off then, but it stuck with me. Then in high school, I joined the cross-country team, hoping to make it to regionals. During one practice, we were immediately told to run laps, nothing out of the...