10 Medical apparatus, namely, wearable devices or glucometers for measuring biometric data for medical use, for storing, relaying, tracking, measuring and displaying biometric data, heart rate, oxygen consumption, metabolic performance, calorie count and blood glucose levels using blood glucose as a biomarker; heart rate monitoring apparatus comprising of biometric sensors to measure heart rate; respiration monitors; blood oxygen monitors; medical device used for collecting, measuring, and displaying blood oxygen levels, heart rate, respiratory rate, bio-signals, and other physiological data, body's autonomic nervous system, bio-signals, bodily behaviour, recovery from physical and emotional stress, human alertness level and performance and for displaying, storing, sending, transmitting and receiving instructions and data relating to any of the above, for; medical and therapeutic purposes