Train Hot, Race Cool

Under the right conditions and training, the human body has an amazing ability to adapt. Whether you are preparing for a hot race or just looking to push your performance threshold further, the new Heat Adaptation Score makes it easy to track your thermal fitness progress.

The Heat Adaptation Score uses an evidence-based formula, derived from extensive independent scientific research and refined in CORE's own research lab. On days with an adequate Heat Training Load, your Heat Adaptation Score will increase. The higher the load, the larger the heat adaptation benefits. Sequential days with no Heat Training Load will cause your score to decline.