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Heat Acclimation Protocol

A progressive 6-week sauna protocol that builds heat tolerance the way a strength cycle builds a squat. Start at 15 min and 170°F; finish at 30 min and 195°F. Endurance athletes who run this protocol see measurable gains in plasma volume, VO2max, and time to exhaustion — without adding a single mile of running.

6 weeks / 4x per weekAdvancedRecovery4 related products

Overview

This protocol turns a broad recovery goal into a repeatable sequence. The point is not to add complexity; it is to make the behavior easy to run the same way every time, then let the consistency compound.

Expected benefit

Plasma volume expansion of 5–10%, VO2max gains equivalent to a moderate endurance block, and the ability to train hard in heat without breaking down. The sauna as a parallel training stimulus.

How to think about it

Run it as written for the first block, then adjust one variable at a time. The useful signal comes from repeating the same inputs long enough to see what actually changes.

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