Back when I first met Katie, when we were working together on a children's theater tour, I would routinely lose blood and get badly bruised setting up the steel and wood set we carried along with us. I would heal up pretty quickly, though, to the point where we both thought I might be Wolverine.
A couple of weeks ago, I sliced a chunk out of the knuckle of my middle finger, and it simply refuses to heal.
"Aw, are you losing your superpower?" Katie said sympathetically when I showed it to her.