
Back to Journey
Phase 02 of 5 · Deep Dive
VO2 Max Testing & DEXA Scans
Two of the most powerful longevity metrics — measured precisely, not estimated.
What This Is
VO2 max testing measures the maximum oxygen your body can use during exercise, reflecting cardiorespiratory fitness. A DEXA scan uses low-dose X-ray to precisely measure body composition — bone density, lean mass, and fat distribution.
Why It Matters
Cardiorespiratory fitness and body composition are among the strongest predictors of long-term health and longevity. Precise measurement replaces estimates with real data you can track.
What We Evaluate
- Maximal oxygen uptake (VO2 max)
- Bone density
- Lean muscle mass and distribution
- Visceral and regional fat
- A precise body-composition baseline
What You Can Learn
- Your true fitness level versus population norms
- Muscle and bone health relevant to aging
- Whether your body composition supports your goals
- Measurable targets for training and nutrition
How It Fits Into Your Journey
These measurements turn the general lifestyle guidance of Recalibrate and Optimize into precise, trackable targets grounded in your own data.
What Happens Next
Results shape a concrete training and nutrition plan with measurable milestones, revisited over time.
Frequently Asked
No. It is valuable at any fitness level and gives a precise starting point regardless of where you are.
DEXA uses a very low dose of radiation and is widely used for body-composition and bone-density assessment.
Many people retest every six to twelve months to track meaningful change in fitness and composition.