Oura is giving its smart rings a big cardiovascular health upgrade

• Oura is adding a couple of new features to its smart rings to help owners better understand their cardiovascular health.
• Cardio Effort will give you an overview of the strain you experience during your workouts over a week.
• Oura is also bringing passive VO2 Max measurements that eliminate the current six-minute walking test.

The Oura smart ring lineup can track your health in multiple ways, including sleep quality and a range of cardiovascular metrics. Oura is now expanding its long list of health-related tools by adding Cardio Effort and automatic VO2 Max.

Oura defines Cardio Effort as a “physiological load metric” designed to track cardiovascular strain, the company said in a blog post. At its core, it calculates cardiac stress by factoring in the intensity and duration of your workout.