There was an article by Jane Brody in the NYT earlier today about the benefits of yoga, specifically about stopping bone loss. It's no longer on the site, but if it reappears it's worth a look.
I read a number of the reader comments and am amazed that yoga, of all things, can be so controversial. Is the Internet the online version of road rage? If you're feeling irritable and just have to take it out on someone you lash out at someone's (worthy) article?