Omaha's Kenton Keith playing for Indianapolis Colts

Watching the Colts-Titans game on Sunday, I noticed that former Omaha Benson High School star Kenton Keith is now a running back for the Indianapolis Colts. Keith, who played college football at New Mexico State, spent the last several years playing for Saskatchewan of the Canadian Football League.

Keith is listed at 5'11 and 210 pounds, which is not far off from my current size. Why do I have a feeling our bodies aren't aesthetically similar?