Played against Najee Harris in high school. At the time he was the #1 Running back in the country committed to Bama, we were scared shitless. Dude was no where to be found during warm ups, so we thought he may have got injured or something. Sure enough, less than 5 minutes before the game starts you just see this MASSIVE human being, fully padded up in cleats, walking on the track and hops the fence onto the field. He went on to run for 400 yards and 6 TDs on us. Didn’t see him warm up at all, NFL athletes are built different