The new Cardio Fitness Levels feature comes with the release of iOS 14.3 and watchOS 7.2, and expands on the Apple Watchâs existing VO2 max feature.. VO2 max is the maximum amount of oxygen your
The Apple Watch 6 series and those after it offer an app that can measure a userâs blood oxygen level from their wrist. A low blood oxygen level means that the lungs are not working properly to exchange oxygen as they should be. (Normal levels are anywhere from 95 percent to 100 percent, and levels are considered concerning if they are below Overall I'm very skeptical about the blood oxygen accuracy, and Apple itself says "measurements taken with the Blood Oxygen app are not intended for medical use and are only designed for general fitness and wellness purposes." Unlike the ECG, the Blood oxygen levels have no "clearance" with FDA.Hypoxemia is a below-normal level of oxygen in your blood, specifically in the arteries. Hypoxemia is a sign of a problem related to breathing or circulation, and may result in various symptoms, such as shortness of breath.
In the case of the Apple Watch 4 and later, make sure itâs fitted snugly to your wrist and then launch the gadgetâs dedicated ECG appâthe one that looks like a red heartbeat scan on top of a itLzUE.