Oura launches Cardio Effort and VO₂ max workout metrics for Gen3 and newer smart rings
Oura announced two new workout-tracking features, Cardio Effort and VO₂ max, as competition in the smart ring market grows from rivals such as RingConn and Ultrahuman. Cardio Effort shows how much a workout taxes the cardiovascular system and aggregates it into a weekly total relative to each user's baseline. VO₂ max is estimated passivel…