Wireless patient activity monitoring sensors comprising activity monitoring sensors, non-contact activity monitoring sensors, passive sensors, ambient sensors, radar sensors, and radio frequency sensors for monitoring movement, behavior, and emergencies of elderly persons; non-contact patient vital sign monitoring sensors; non-contact patient fitness and health monitoring sensors; non-contact patient sleep monitoring sensors; wireless patient monitoring sensors comprising respiratory sensors and medical cardiovascular sensors for monitoring the heart rate, heart beats, heart beat variability, movement, behavior, and emergencies of elderly persons; medical biofeedback sensors; non-contact remote patient monitoring sensors; medical biofeedback sleep monitoring sensors for detecting sleep disorders; biofeedback posture monitoring sensors for use in detection of spinal posture; non-contact emergency response patient monitoring sensors