A ring-based exercise system collects health metrics and senses rotational movements of a ring moving in a rotational path to calculate exercise results, such as calories burned, and provide instantaneous visual and data feedback. The system monitors the number of calories burned, duration of exercise, and number of rotations, while simultaneously emitting both illumination and audio feedback that correlates to the ring exercise. A ring is twirled around a central axis, such as a torso or limbs. A motion sensor senses the positional information of the ring during the exercise, such as velocity, acceleration, number of rotations, and x-y-z axis motion. A processor, wither integrated into the ring or remotely located calculates the exercise results, i.e., calories burned, through the health metrics and sensor signals. An illumination and an audio signal visible on the ring correlates with the velocity and movement of the ring.