While spending some time at 24 Hour Fitness in Las Vegas last weekend, R. Kelly gave a few fans an up close and personal performance of his hit record ‘Bump N’ Grind.’ While at the center, the singer hit the sauna for some heated relaxation. When he entered, naturally he was asked “Are you R. Kelly?” He never gave an answer and instead just started singing (amazingly, I might add). Check out the video below.