Mag feature - did yoga help you?

I’m researching a magazine feature about how yoga can ease specific conditions, like asthma, IBS, backache or PMS (for example). I’m trying to find case studies, and would love to hear from someone who has found that yoga really helped them, perhaps to the extent that they could reduce the use of other therapies.
I have a deadline of lunchtime on Friday 9 June 2006. Hope you can help!
stefaniefox2003@hotmail.com