I have bruises in the weirdest places that I don't know how I got.

Here's a list of all the bruises I currently have (Yay!) :

•right side
•right knee (two)
•right middle finger, middle joint
•whatever you call the place between your ear and nose, right side
•left middle finger, middle joint
•left arm

Someone explain to me why the heck I have so many bruises and why I can't remember any getting them