As the gym empties, a fit, tanned beauty, oblivious to the hidden camera, starts a private show. She stretches, her lithe body arching, before stripping down to a tiny thong. She teases herself, running her hands over her curves, before snapping the thong off and fingering her tight, wet cunt. She rides her hand, her moans echoing, until she cums hard, her body convulsing in the dim gym light.