I do, on and off and I think that when I'm doing yoga regularly I am a much better person and more calm and positive, and when I'm not I feel overwhelmed and panicked. The benefit of doing yoga is double for me: I benefit from the yoga itself and then I also feel good about myself because I'm doing yoga IYSWIM.
Classes are expensive and hard to fit in sometimes, and I tried and failed to do it at home, always saying: there's no space, it's hard to motivate yourself, it's too messy and distracting at home, but now I've persuaded DH to do it with me and we do it straight after dd goes to bed on Thursdays with my "basic yoga for dummies" dvd and it's been really good. it's one of the few positives between me and dh at the moment.
We are not as disciplined as I'd like tho, we sometimes skip a session and I'd like to be doing it twice a week.
My yoga teacher, when I go, is brilliant, and I'm tempted to go back and it is one of my long-term dreams to do a retreat and go on a yoga holiday....
Sorry for yoga ramble. Namaste everyone!