Drug "Abuse" in Pro Sports

With the 4-game suspension of Titans RB Travis Henry, I take a brief look at what constitutes "abuse" under the drug policies forwarded by the professional sports leagues.

The short answer: it seems that any use is classified as "abuse," but no one really knows except the parties involved -- and perhaps not even them.

This hasn't deterred the baseball players union from playing ball on the steroids front, though.