The History of Yoga.

I've been looking into the history of Yoga, and I've been amazed. The wikipedia article for Yoga has 40 sections, so it's quite a read http://en.wikipedia.org/wiki/Yoga. I find it amazing how many different generes of Yoga there are. It sounds like in our class, we are mostly practicing the Hatha yoga, which itself is hundreds of years old. Other types of Yoga have their origin thousands of years ago in India  Various seals depict Yoga positions and meditation that are more than 5000 years old. It's pretty neat to think that we are practicing something that came from a time so long ago.