Yes yoga has numerous health benefits, it is good to teach in school. My mom started me on yoga when I was a kid and I guess it has just stuck. I've been trying to change my routine up though, mostly pushups pullups sit ups etc. If you haven't you should try boxing workouts, hitting a bag everyday is a nice stress reliever and can help keep your arms toned if that is what you are lookong for.

The Dude: And, you know, he's got emotional problems, man.
Walter Sobchak: You mean... beyond pacifism?


Walter Sobchak: This guy f*cking walks. I've never been so sure of anything in my entire life