In case you’ve been wondering what the heck this Yin Yoga stuff is, this article offers a good, clear introduction to the philosophy and practice of Yin Yoga. It’s written by one of Yin Yoga’s founders, Paul Grilley who I had the chance to study with this summer.
There are two principles that differentiate yin practice from more yang approaches to
yoga: holding poses for at least several minutes and stretching the connective tissue
around a joint.
Read it here: http://www.yogajournal.com/practice/580?print=1