HeartBit is an interface designed for haptic heart rate biofeedback. A handheld heart beats alongside your own, mirroring the size, weight, and movement of a hidden internal organ, now external and tangible in real-time. HeartBit offers a medium for users to self-regulate in moments of stress, anxiety or exertion: Control your heart to control your breath and body—for relaxation, performance enhancement, or augmented self-awareness.