I have attended naked yoga class in San Diego, NYC, Boston and Fort Lauderdale. Here there is no sex in any of these classes, basically a room full of hot guys naked going through the yoga routine. It does have a bit of a sensual undertone to it, sometimes you may do some partner yoga but you are so concentrating on the yoga poses that the sexual aspect of it is far in the background. Occasionally you may see a hard on pop up but that's a natural happening of a man and everybody carries on with the class. Now after class, some guys may hook up with each other at their own place or a group may gather to go grab a bite to eat. But the yoga portion of the class is all yoga and professional. I recommend trying i out, once you do it will seem as the only way to do yoga.