The rhythmic clanking of weights and the grunts of exertion echo through the empty gym. A young woman, her body honed by hours of dedication, enters the room, her eyes scanning the dimly lit space. She's not here for a workout, she's here for a release, her body aching for a different kind of exercise. She spreads her legs wide in a splits position, her yoga pants soaked with her desire, ready to be filled.