an ALS joke, sort of........................

Late Night With Jimmy Fallon
The Philadelphia Eagles new coach, Chip Kelly, recently got rid of the team's long-running tradition of having fast-food Fridays. He says that he wants his players to live healthier lives. Then he sends them out to hit other people with their heads.
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I am told by some of the doctors I talk to, that, there is some thought  that one cause of ALS is related to head trauma...such as that received by football players and persons who serve in the military.

...any thoughts or comments????