Is yoga good for health ?

I have always heard that yoga is good for your health. However as with anything, if you do it incorrectly or over do it, thats when it might become bad for you. I have heard of cases like that too. It's important that you start slowly and then know what your limits are, when to stop, etc., too. I have a friend who teaches yoga classes, she's in another state but if I was nearby I would take the classes. I'm not sure if there are any in my area, wouldn't go unless I had a friend who taught it anyways. She has a pretty good reputation as a yoga instructor and she also teaches ballet and has been for years. The health benefits from a daily routine of yoga is basically very good for you.