The studio's website says the classes are typically between 90 and 95 degrees, but I've read the thermostats in there, and they lie. Once it was 115, and that wasn't the hottest class I'd ever been to. It just depends on the teacher and how much they want to crank it. Plus, the more bodies in there, and the more you are all moving, the hotter it gets. Sometimes it's so hot, it's all I can do to lie down on the mat and pray for it to be over soon. It gives me some idea what beached whales must feel like.
Even though it's really hot, that doesn't mean it's naked yoga. In fact, much of the time it is a Lululemon fashion show in there, and all the yoga bitches have all their gear on. Additionally,despite the fact it's 2012, most women want to preserve the idea that we only 'glisten', and wearing less clothing will reveal exactly how sweaty we get, which is, not surprisingly, VERY SWEATY.
However, the men in these classes, who I will now refer to only as Yogachos (yoga + macho) are of a different opinion. To them, 1) it's so effing hot in there, you'd be an idiot to wear any more clothing than necessary, and, 2) Hot yoga with all the hot yoga bitches is a great excuse to show off your hot sexy sweaty hairy speedo-ed body. I have never seen a Yogacho younger than 40ish, with the median age probably around 55. Would you want a hairy sweaty dad in your yoga class, leaving giant puddles of sweat everywhere? Didn't think so.