I've recently started Tai Chi. It must be in the coldest building in the history of the earth! I was so cold practicing my short form last week that the Instructor had to rub my hands in his to get the feeling back into them! I swear my nails were blue!
I'm really enjoying it though, I find it totally relaxes me and gets me focussed. I'll write about it more as the weeks pass. I'm sure that I'll just grow and grow with it.