Heat Training: The Early-Season Edge

2026-02-25

Most athletes only think about heat training two weeks before flying to Kona. That’s reactive. Used early in the season, heat training can increase plasma volume, improve heart rate control and build durability before racing even starts. This episode was recorded last year and I’m re-releasing it now because this is exactly when smart athletes should be using it. I’m joined by Lindsey Hunt from Precision Fuel & Hydration to break down how it works and how to apply it safely. In This Episode • Why heart rate spikes i...

Most athletes only think about heat training two weeks before flying to Kona.

That’s reactive.

Used early in the season, heat training can increase plasma volume, improve heart rate control and build durability before racing even starts.

This episode was recorded last year and I’m re-releasing it now because this is exactly when smart athletes should be using it.

I’m joined by Lindsey Hunt from Precision Fuel & Hydration to break down how it works and how to apply it safely.

In This Episode

• Why heart rate spikes in hot conditions
• How plasma volume rises in just a few days
• The difference between acclimation and acclimatisation
• Whether it helps if you race in the UK
• Lab vs DIY approaches
• How long adaptations last

KEY QUOTE

“Often our ability to lose heat limits performance more than our actual fitness.”

To follow Lindsey or Precision Fuel and hydration please check out the following social media channels

Twitter (personal) - LindseyHunt_24

Instagram (PF&H) - Precision Fuel & Hydration

Instagram (personal) - Lindseyh.u.n.t.

Lab page - https://www.precisionhydration.com/lab/

Precision Fuel & Hydration Stuff

A recent interesting blog about wearable sweat sensors

A recent blog about how fuelling requirements change at altitude

Free online sweat test: https://sweattest.precisionhydration.com/pages/why-personalise-your-hydration-strategy

Quick carb calculator: https://www.precisionhydration.com/products/precision-fuel-sample-pack/#thecarbcalculator