
DEXA, VO2 Max, Grip: Biomarkers That Matter Most
Most people get biomarkers wrong by chasing the most tests instead of the most useful ones. In this video critique, Bryan Johnson reacts to “Browney” measuring nearly everything, from 3D scans and mole mapping to DEXA, grip strength, lactate thresholds, and VO2 max. The unique takeaway is not “test everything,” it’s “prioritize low cost, high information markers,” especially **DEXA** for **bone mineral density**, plus performance metrics like **grip strength** and **VO2 max**. The critique also flags a big misconception, pushing max-effort strength tests without a warm-up can be an avoidable injury risk that can later show up as asymmetry on scans.














