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Thoryn

Fitness & Athletics

Train the body to protect the brain.

Endurance sport, mountain days, and strength work are not a hobby alongside the science — they are the same experiment run on one subject. What gets measured on the trail shows up in cognition, mood, and long-term resilience.

Based in Aspen, Colorado, Thoryn trains year-round as a competitive triathlete and skis more than a hundred days a season. Altitude, cold, and long aerobic hours are treated as inputs — dosed, tracked, and adjusted like any other protocol.

The through-line with the lab work is simple: aerobic capacity, strength, and sleep are the most reliable levers on brain health anyone has. Every training decision is made with that downstream effect in mind.

How this feeds BRAIN.ONE
Thoryn Stephens on the podium at the Hermosa Beach Triathlon

The training stack

01

Triathlon

Swim, bike, run — the sport that rewards consistency over heroics. Structured blocks, zone-2 volume, and threshold work built around recovery rather than in spite of it.

02

Ski & mountain

100+ days a season on Aspen snow, plus skinning and altitude work. The mountain doubles as the training environment and the reason for training.

03

Strength & durability

Heavy compound lifting and single-leg work to protect joints, bone density, and the ability to keep doing all of the above for decades.

04

Recovery

Sleep first, then breathwork, sauna and cold, and deliberate deload weeks. Recovery is the training stimulus that actually gets absorbed.

Race achievements

A running record of races, podiums, and results.

  1. 2024

    Hermosa Beach Triathlon

    Podium

    Tower 26 Hermosa Beach Triathlon — age-group podium finish on an ocean swim, flat coastal bike, and beachfront run.

  2. Ongoing

    Aspen season — 100+ ski days

    A full winter of altitude volume on Aspen snow, treated as the aerobic base block for the race season that follows.

  3. Ongoing

    Olympic & sprint distance racing

    A rolling schedule of sprint and Olympic distance triathlons used to test training blocks against the clock.

What gets measured

HRV & RHR

Daily readiness signal, trended not spot-checked

Sleep architecture

Deep and REM as the recovery ledger

VO₂ max

The strongest single marker of healthspan

Zone distribution

Mostly easy, occasionally very hard