Ow ow ow

My new office building has a fancy workout room with lots of swell equipment. Yesterday I spent 30 minutes in there, first time since before the holidays. I guess I got a little overly enthusiastic, and strained several muscles, especially the ones in the lower back. Nothing really serious, but I'm in sufficient pain that I don't think I can manage exercising again today, even if I do something different like swimming.

So... anybody else having trouble with their New Years Resolutions?