On a Monday night at the Children's Aid Society in Greenwich Village, 25 New Yorkers—white, black, Hispanic, Asian, young and old—roll over each other and the floor like particles in Brownian motion. There's an infectious joy in the room, balanced by intense concentration. Two women break apart and run, hand in hand, weaving around grappling couples. A man leaps from another's thigh and slides down his leg to the ground. Groans and sighs float in the air, along with... More >>>