Fan rowdiness and team expectations on a professional football game day is paired with the expectations National Football League players put on themselves. The elite athletes playing America’s game have developed routines to help them cope with the mental and physical stress put on them.

“The musculoskeletal system is a very honest broker of reality. We cannot ask it to perform at an elite level during competition without establishing a baseline of high performance," Dr. Nicholas Bernthal, a pediatric orthopedic surgeon and the interim chair and executive medical director at the David Geffen School of Medicine at UCLA, told Newsweek .

"As we all physically perform in our lives– chasing our kids, performing surgery or chasing down a running back– our body is willing and able to push

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