How the Apple Watch’s VO2 max score helps measure your cardio activity

Apple is rolling out iOS 14.3 and WatchOS 7.2 updates today to users. Along with its Fitness+ service, Apple‘s introducing a new notification to indicate your cardio movement is low. To measure your cardio health, the Cupertino-based company is using a measure called VO2 max that indicates the maximum volume of oxygen the body can use while exercising. VO2 max is measured in milliliters of oxygen the body can use per kilogram per minute. This is an indicative score for endurance — so you’d want to get a higher score.  According to Apple, for male users aged 30-39 average score should be…

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