Sports

A genuinely thin category — altitude and physiological performance-training infrastructure for elite endurance athletes is real, active infrastructure, but dominated by national and Olympic-committee training centres rather than commercial retreat operators with a confirmable web presence; two confirmed anchor institutions as of 2026.

Wearables, blood panels and at-home biomarker tests that turn an athlete's own physiology — recovery, blood chemistry, glucose, genetics, urine biomarkers — into an actionable training signal, sold direct-to-consumer as a performance product rather than a clinical diagnostic.