OW!
My God, I strained my back while setting down my backpack this morning (damn property book! it's also my laptop's fault, but I didn't want to curse it ). Tingling radiated all across my shoulderblades, and it aches now when I breathe or yawn. Curses!
BF accurately diagnosed my shoulder ache last night as an air hockey strain. Can you believe I got strained doing something that's essentially the board game version of a sport! When a game of air hockey leave me injured and aching two days later, it's time to start attending yoga.