I think the strength and conditioning has progressed to the point where they can almost make super-athletes out of giant people. Not all necessarily. But with training you can definitely become bigger, faster, stronger and more athletic. Then it's about having the God given measurables. I think football at some positions is become more and more about length at some positions like wide receiver and also about being big enough to take punishment while at the same time being athletic to perform at an elite level.