When I first heard about Bikram (heated) Yoga, I thought, "YEAH RIGHT!!!" then I tried it.
Let me tell you.... I am an easily 'stressed' person, I have had insomnia, and I have a short temper. Since going to Bikram, I sleep more soundly, I am more relaxed and I have learned to let go.
I know yoga is not a cure all, but it sure worked for me and it made me feel a whole letter better about myself. The Bikram class is about mental agility and endurance- you will probably notice more of an emotional change then a physical. The Power Yoga (Vinyasa Class) is EXCELLENT, probably the best in West Seattle (and I have gone every where in the past seven years). It has given me strength and muscles that I never even knew I had. If you like yoga, you will appreciate both classes. Heck, I even took my rock climbing anti-yoga boyfriend and he liked it.