A fellow instructor in my department fell off a treadmill and fractured her ankle. Now, I know that I bash treadmills a lot, but here's the perfect example of why they are evil. Evil. They will break your leg if given the opportunity.
Because she's immoblized and can't drive, stand, or walk on the injury for a month, I have volunteered to take over two of her classes. It has occurred to me that maybe, just maybe, I've taken on more than I can handle, since adding those two classes will mean that I'm currently teaching nine (9!) classes -- that means I'll teach approximately 225 students a week.