I just saw this thread while perusing "other sports" - yes yes yes! I thought I was the only person who didn't come from a yoga class all relaxed and happy. I come out in the worst mood - and I've tried several times with several types of yoga. The more intense the class, the worst mood I have and the longer this mood lasts. My DH has banned me from yoga (not really, but it was affecting our relationship). If I do decide to do a class, he avoids me several hours afterwards. I'm not sure why, but I think it's because I feel like I'm bottling up everything, not releasing it. I'm used to dancing (have danced ballet, jazz since I was 4), tae kwon do, running, cycling, swimming - all things that release your energy. I think with yoga I hold it all in while I'm holding in all those poses. And don't get me wrong, I have fun while doing it, but as soon as I'm finished - and the cool down part is really bad for me - I am not happy. When instructors have you lay there with the lights off and cool down - that's when I start to get pissy. I originally thought that maybe that was the source, so would leave before we laid there, but I still got home in a bad mood.

Now, pilates is a different story - I leave relaxed and happy from a pilates class. And a dance class, and even an abs class!

It's nice to know at least one other person in this universe is grumpy after yoga.