

Estimate your aerobic fitness using the Cooper Test or your 5K time.
VO₂ max is the maximum rate of oxygen your body can use during intense exercise. It is one of the best indicators of aerobic fitness and endurance potential.
Field tests like Cooper and 5K time provide estimates within 5–10% of lab tests. For precise measurement, a graded exercise test with gas analysis is needed.
High-intensity intervals, threshold training and consistent weekly volume are the most effective methods. Progress takes 8–12 weeks of structured training.
Rai builds workouts that target your aerobic capacity.