Relaxation system

A relaxation system comprising:

• an enclosure configured to rest on a person's sternum;
• a vibrator disposed in the enclosure and configured to induce vibrations of at least a portion of the enclosure and provide a perceptible stimulus to the person's sternum;
• electrodes mounted to the enclosure, each electrode including a contact surface flush with or extending outwardly from an outer surface of the enclosure, the electrodes being mounted to the enclosure in a manner such that when the enclosure is placed on the person's sternum ionic currents from the person's body surface are converted into electrical signals;
• a user feedback stimulus generator mounted to the enclosure and configured to generate a user-perceptible stimulus that is different than that of the vibrator;
• and
• at least one processing device in electrical communication with the vibrator, the electrodes and the user feedback stimulus generator, the at least one processing device being configured:
• to control the vibrator;
• to measure at least one cardiac metric based signals received from the electrodes and provide a detected cardiac metric;
• to determine a relaxation status by comparing the detected cardiac metric to a target cardiac metric stored in a database associated with the at least one processing device;
• and
• to control operation of the user feedback stimulus generator based on the relaxation status.