I'm extremely lukewarm about teaching breathing to just anyone. I think it takes a higher level of respect for the associated dangers, not to mention a _full_ understanding of them. It's also never the first thing I would teach someone. It was three years playing with fire for me before I attempted breathing, and I learned the basics three months into playing w fire. As far as the health concerns, they concern me alot, I've done alot of research online as well as talk to a local burn unit tech. The tech gave me some great tips for reducing the risks while breathing, and I've taken alot of Pele's advice on detoxing your system regularly(perhaps she could repost those tips on here???). All this does is reduce the risk tho, so in my troupe breathing is something that is reserved for special occasions eh..