The other really, really nice thing about Tantra Yoga - besides learning to be comfortable in the nude with other guys - is learning to be comfortable with a boner in front of other dudes that you are not going to be playing with in any sexual manner at all.
The sense that it's perfectly natural comes from the casual way in which all the guys stand around chatting before class. Everyone is nude; it's for a particular reason. No hard-ons, but to see a guy touch his cock or his balls in a non-sexual way is not commented on - it's a normal thing for a dude to touch himself.
During class, there are two lines facing one another. After a few warm-up postures, you cup a hand over your crotch, and you are then instructed to place your free hand over the hand of the guy next to you. Then gently tap against it. This begins the awakening process of erotic energy. After a moment, you remove your hand from your cock and the guy next to you covers it with his hand.
In doing so, he gently squeezes and massages everything. Sprouting begins. My partner got a bit hard and I popped a full on boner - he actually gripped the shaft and stroked it a couple times before he cupped my cock against my abdomen. Instructed to let go, I glanced around the room and every guy had a nice log of wood starting.
The erotic energy is flowing as planned and intended. The postures begin in earnest. It's an awesome experience. Cock hardness flows and ebbs in a continuous cycle. Ending the class by lying draped over one another's nakedness to soak up the energy and relax brings a such a sense of peace and belonging. Moving into the individual lotus position for the final breaths, to gather thoughts, and appreciate the oneness of your brothers...It's more than a sense of friendship, or comradery. There's a peace and contentment that comes over your entire being, but that energy still flows within.
Afterward, everyone is lounging around, talking more quietly than at the start, but still naked and more comfortable than ever.
If you want to learn more about Tantra Naked Yoga:
I'm so looking forward to my Wednesday nights and the bonding with these guys.