Thanks for the link O.D. I'm interested in exploring the link between Yoga and Buddhism. I believe that Buddhism, especially early Buddhism, has much in common with Patanjali's Yoga, which really is much more about meditation and spiritual practice than it is about asana practice. But still I think it's important to maintain the distinction between the two.

I've read other posts which say that much of Buddhist practice is Yoga practice, but without mentioning specifics. The article at the link seems to show that Yoga and Kundalini tantra was incorporated into Buddhist practice. I know for a fact that Kundalini practice was recorded in the Upanishads, and so is probably fair to say that Kundalini was a Vedic spiritual practice that was adopted by Buddhism, and doesn't have all that much to do with hatha yoga as it is practiced today. I'm sure there are scholars out there who are much better qualified to discuss this than I am.