A garment adapted for monitoring a user's heart rate includes material, a transmitter, one or more electrodes, and a power source. The transmitter, electrodes, and power source are integrated with the material. The electrodes and power source are operatively coupled to the transmitter, and the electrodes are responsive to the user's heart rate. The garment is adapted for being worn, washed, and discarded with the electrodes, transmitter, and power source integrated therewith. A method of monitoring heart rate includes integrating a transmitter, electrodes, and power source with a garment, coupling the electrodes operatively to the transmitter, coupling the power source operatively to the transmitter, and adapting the garment for being worn, washed, and discarded with the transmitter, electrodes, and power source integrated therewith.