I did Bikram for 3 months 3/4 times a week and whilst I enjoyed it and became a little more flexible I think there are better forms of Yoga out there. Why? Well at first I thought this is amazing and quite a good workout, then I took a friend along who practiced Ashtanga Yoga and she said Bikram was prety easy and it was only the heat that made it feel hard. This was confirmed to me when one morning the heating system was faulty so we had portable heaters in the studio. The heat was around 32c for the duration instead of the usual 40c+. The class felt so easy and I left feeling like I hadn't had any kind of workout. Since this episode I have changed my opinion on Bikram. To add to that, it is propbably the most un-green yoga around, the amount of energy used to heat those rooms must me emense which is reflected in the cost of a class, it was £13 a session when I went, it's now a whopping £16! Compare that to £8 a class for Ashtanga. For me it's a no brainer. Having said that, any form yoga will benefit those in need of a good stretch but I suggest you try a few flavours of yoga before signing up and parting with your hard earned cash!