Friends, two firsts happened to me at the gym today.
1. They ran out of towels twice, so for my shower I had to use one of the tiny towels stacked up in the weight room for the lifters to use to clean their sweat off the bench, and
2. I Zumba'd.
I actually rearranged my appointment with my therapist so I could try this Zumba class because I had heard it was so fun. It's so popular at my gym that you need to pick up a pass at the desk before the class starts, because otherwise the room would fill up. I made sure to situate myself in the far back. The instructor was tiny and tan and wiry and apparently spine-free, so frenetically and effortlessly did her hips swivel and shake independently from the rest of her body.
I am relieved to say I was not the only one having trouble following the moves. I did ok, all things considered. I am fairly uncoordinated — I sometimes have trouble remembering to alternate my legs as I walk down the stairs, seriously. But I kept up, mostly. Though my neighbor complained of burning thighs from all the squats and such, my legs felt fine. I did start feeling it in a bad way in my knees, however, which made me feel old. (The multiple girls with words printed on their asses also made me feel old, but also a little superior.) At one point I got a bad stitch in my side and had to just stand there while everyone else hip-swiveled and did the salsa step back and forth. By the end of it my face was flushed, in the weird way it gets sometimes when it's like the blood has filled every single capillary. My face was super-hot, so red as to be purple. It's not a good feeling. After my shower with the ratty, tiny towel (which tore as I inadequately dried myself), I drove home with the air conditioning directed directly into my face. But only a chocolate eclair bar got me completely back to normal.

I can see why people like Zumba, but I think I need a class that's more about proper form and less about dance steps, since my knobby, inward-facing knees are prone to being messed up.