Enya News: How to get fit at the swinger's club (Independent)

I'm only five minutes into my Jukari class and already I'm looking for an exit. The lights are dim, the music (a sort of earthy, Enya-eqsque number) is rolling around the room the room, and I'm lying, legs akimbo, ankles hooked in a pair of stirrups dangling from the ceiling, thrusting my hips into the air. It isn't the most dignified of poses. Surely, I think, this can't be for real.