A health worker uses a pulse oximeter to check the oxygen saturation level of another after administering a COVID-19 vaccine at a hospital in Gauhati, India, Jan. 21, 2021. WASHINGTON — Makers of ...
Six-pack abs don't always show a picture of health. But getting a read on the maximum oxygen your body takes in while exercising can be key for long-sustaining health. The technology to test oxygen ...
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