By Ellen O’Brien – National Geographic –
This key metric reflects how much oxygen your body uses during a workout. But it isn’t just for athletes—your VO2 max is a critical indicator for your future health and longevity.
When it comes to physical fitness, different activities demand different metrics. High-intensity interval training (HIIT) enthusiasts track heart rates, runners and cyclists monitor speed and mileage, and strength trainers count repetitions and weights. Yet, there’s another crucial metric worth considering: VO2 max.
