The simple act of touching.
D000328:Adult; D000368:Aged; D002300:Cardiac Care Facilities; D002675:Child, Preschool; D005260:Female; D006321:Heart / Q000502:physiology; D006339:Heart Rate; D006801:Humans; D009633:Nonverbal Communication; D009723:Nurse-Patient Relations; D014110:Touch; D014947:Wounds and Injuries / Q000451:nursing