We stumbled upon something going on in Bryant Park.
Something called "Florida Flow Fest 2013" and there were all sorts of folks going with and discovering the "flow." There were various groups spread out through the park. A couple of yoga classes were being held, one on the stage. Here are some more pictures.
Kavasutra, one of the sponsors of the event, set up a booth where they were dishing out cups of kava. Ihad some and didn't feel that much of anything unusual. The Wikipedia article says that it can lead to an increase in liver enzymes.