You a yoga fan?
I don't know much about it. Would you mind teaching me?
There are different types of yoga.  One of the more popular is Hatha.
Hatha, what is that all about?
Hatha emphasizes physical exercises to master the body and mind.
so, like more extreme stretches? 
Some as you progress.  Zen exercises are designed to open the body
That sounds like it could be beneficial. So what is zen?
Zen is a school of Buddhism that originated in China
China hua. and is this a recent invention?