Dan Morris, 37, formerly a University of Pennsylvania football player, had always considered himself an athlete.  A few years ago he noticed a slight tremor in his hand. The results of preliminary medical examinations were unclear. But last year he was diagnosed with Parkinson's Disease.

"It changes your perspective on life," he says in the video.  After the initial emotional shock, Dan and his family turned toward action. "How are we going to make things better?"

This question led them to the Michael J. Fox Foundation. Dan now leads a fundraising effort through Spartan Racing. The next event is August 25, the West Point Spartan Sprint.

"For me it's all about working out every day knowing that there's something I can do that will make a difference, and than having the support of everyone behind me."

Ready to conquer your fear. Download the Spartan Way of Life E-book