Your VO₂max, ventilatory thresholds (VT1/VT2), precise HR/pace zones for easy, tempo, and intervals, lung capacity and utilisation, fat burning efficiency, recovery capacity and health vs biological age.

Establish a baseline, then re-test each block to see VO₂max and thresholds climb on a shareable report - exactly the measurable progress biohacking and longevity leaders advocate.

Calibrate Garmin/Apple/WHOOP with lab-derived zones; gold-standard gas analysis outperforms consumer estimates, which can deviate around thresholds and VO₂max.

Identify your FatMax (max fat-oxidation) intensity to burn more fat, spare glycogen, and improve endurance - grounded in decades of research.

Breath-by-breath testing gives your exact Zone-2, tempo, and interval intensities so every session moves the needle (and pairs perfectly with strength work for busy schedules). Influencers like Huberman/Galpin emphasize VO₂-focused protocols for efficient gains.

VO₂max (cardiorespiratory fitness) is treated as a clinical “vital sign” and higher levels are linked with markedly lower all-cause and cardiovascular mortality—this is the north-star metric for healthspan.