Labels:crt screen | earth | fence | grass | plant | railing | reckoner | road | sky | stairs | windowpane OCR: MEASUR ING YOUR HEART RATE OUR HEART RATE can be measured using machine called an electrocardiogra ph ECG The machine displays the electrical activity heart and provides useful W a of checking its health and identifying any problems. With each hea rtbeat electrical signals pass from the heart to the skin. Metal sensors, attached the skin. pass these signals tc an ECG machine which displays them as a moving line on monitor screen Heart rhythms
