AQ, VO2 max & Fitness Age

What is AQ and how does it work?

• What is AQ?
• Why is it so difficult to achieve 100 AQ?
• Why am I not getting any AQ at all?
• How do I manually add an activity?
• Is my VO₂ max correct?
• Is my fitness age correct?
• How does the predictions in the app work? (For subscribers)