A couple years ago, I noticed that I'd developed MTS (Multiple Tweet Syndrome) without even realizing it was happening.  I was tweet-tweet-tweeting all over the place.  It was partly a result of officiating lacrosse, where that is encouraged.  But I had to work hard to get rid of it, b/c it had become such a bad habit.  I still do it occasionally on a quick travel that takes me by surprise, but for the most part, it's gone from my game. 
Now, however, I discover that I have JPS (Just Point Syndrome).  I have no idea how it happened, but when I call a foul for an illegal screen, I neglect to put up a fist! 
I first noticed this at camp this summer, but I chalked it up to being nervous.  But it's still happening.  I know we see it from some of the "big-wigs" on TV, but I don't like it and now I've got to get rid of this bad habit too.  

  One more reason to avoid the bad habits in the first place.