I recently talked with New York Times science writer William Broad about his new book The Science of Yoga—and, naturally, spent a disproportionate amount of time on his sex chapter. The subject breaks down into three parts.

1) Autoerotic stimulation:

2) Bringing sexy back through plain old yoga:

3) Tantric yoga and the blowback it's engendered:

You can watch the whole conversation--even parts not about sex--here.