After almost two years, Apple has finally redesigned and relaunched the Blood Oxygen feature on Apple Watch Series 9, Apple Watch Series 10, and Apple Watch Ultra 2 in the United States. This feature ...

The Fitbit Charge 6, the latest addition to Fitbit's lineup of fitness trackers, has introduced a significant advancement in health monitoring with its built-in blood oxygen saturation (SpO2) feature.

The sea mammals may actually be able to sense the amount of oxygen in their blood—something we humans can't do. A new study suggests gray seals (Halichoerus grypus) can sense the level of oxygen in ...