I did hatha yoga 10 odd years ago. There are different types and some are more physical than others - hatha is one of the most gentle. At the time I had a very stressful job and found it brilliant for dealing with that. It was kind of a weird feeling, but I would come out of a class feeling completely envigorated, wired, but completely restful at the same time - makes no sense but that's how it was. I really enjoyed it, and wish there was somewhere closer to where I live now so I could keep doing it.