In America's competitive work climate, there's growing concern that taking a job too seriously could be unhealthy.
Last week, Michigan State football coach Mark Dantonio suffered a heart attack. He was released, but later re-admitted with a blood clot. But after missing just one game, he'll be back on the sidelines Saturday.
"I'm not going to miss 'Michigan Week.' I'm not going to miss it," he said. "There is something special about this week, rivalry week."
But is it too soon?
According to a recent study, people who work 10 or 11 hours a day have a 60 percent greater chance to develop heart disease or die prematurely.
"Americans work harder than any industrialized nation in the world, and yet we take the least amount of time off for recreational activities," said Dr. David Shukri of Providence Hospital in Southfield, Mich.
One of Dantonio colleague, who is college football's top 25, has also had to take a long look at his health on the job.
University of Florida coach Urban Meyer quit his job last year at age 46, but came back three days later.
"When you put your heart, soul, and everything into being a father, husband, and coach, not much time [is] left," Meyer said.
For Dantonio, the thrill of the game is worth the stress.
"I had an uncle talk to me one time and really do believe him... what doesn't kill you makes you stronger," he said.