I've been doing yoga for about 4 years now but I usually practice on my own and only go for about 30 minutes at a time. I went to a Bikram yoga class tonight though, it's known as 'hot' yoga. They turn the heat up to 98-100 degrees and you do a lot of balancing poses. It was a lot of poses that I don't usually practice and was quite intense. It really kicked my a$s but I feel great and $20 bought me classes for the whole week. Unfortunately for a month unlimited is $145 so I'm not going to be able to afford that right away but this week will be awesome.