I get random bruises all of the time. I am starting to think that I may be a sleepwalker, and a clumbsy one at that. For example the bruise I discovered near the knuckle of my middle finger:

I mean really, how did I get a bruise there?? I also found one on the back of my calf last week and frequently find them on various spots on my arms and legs with absolutely no memory of bumping into anything. And it seems like when I do run into something I and think it is going to leave a nasty bruise nothing much comes of it. Weird.