An Interesting article on ESPN about Newfoundlander Ryan Clowe. He had his playing career end with several concussions.
But he now has focused on being a coach and it is looking good.
http://www.espn.com/nhl/story/_/id/18605483/nhl-forced-concussions-stop-playing-former-san-jose-sharks-new-jersey-devils-agitator-ryane-clowe-finds-stride-coach