My neighbor founded the Web of Love, inciting people to consciously experience connection to others -- and ultimately to everyone on the planet. He talks about experiencing each others' energy and connecting heart-to-heart. Another way to say think of the exercises he suggests is that they put participants in physical proximity with an intention of trust, promoting the release of oxytocin.
To me, this does not negate in any way the feelings of love and connection participants in Circles of Love feel. We are our bodies, and the only "true" emotions begin in our bodies. Understanding the mechanisms of emotion don't lessen their power.
I got teary reading this story: