01
Question.
Start with a real training or performance problem worth solving.
Tempered Science
Sport science in the real world.
Tempered uses field testing, wearable monitoring and applied physiology to answer questions that can actually change training, preparation and performance.
The Tempered approach
Question. Measure. Interpret. Apply.
Testing starts with a useful question. The point is not to collect more data, but to collect the right data and turn it into a decision an athlete or coach can use.
02
Measure.
Collect only the information needed to answer that question well.
03
Interpret.
Put the result in the context of the athlete, environment and event demands.
04
Apply.
Turn the result into a training, pacing, hydration, cooling or heat-preparation decision.
Field research & collaborations
Current work.
Real athletes, real environments and practical questions. Open a project to read the short research summary.
Calgary Rowing Club
Heat, fatigue and performance on the erg.
Time trials, interval work and a simple cooling intervention.
Read summary
Calgary Rowing Club
Heat, fatigue and performance on the erg.
Time trials, interval work and a simple cooling intervention.
Tempered has followed Calgary Rowing Club athletes through several different sessions, including 6000 m and 2000 m time trials and a high-intensity interval workout using a simple cooling intervention.
Across the projects, athletes have produced similar performances while managing heat differently. In the interval project, cooling the skin between hard efforts reduced surface temperature while internal temperature remained similar, and the cooled group maintained late-session pacing more effectively.
What we're learning: heat management may matter even in sports and environments that do not initially seem hot, and simple cooling strategies may influence how well athletes hold performance as fatigue builds.
HYROX · CORFIT
Heat strain during race-style hybrid work.
Exploring thermal responses in singles, doubles and high-output indoor competition.
Read summary
HYROX · CORFIT
Heat strain during race-style hybrid work.
Exploring thermal responses in singles, doubles and high-output indoor competition.
Tempered has collected thermal data during HYROX-style race simulation with CORFIT athletes to explore how heat strain develops during sustained high-output indoor work.
The work includes athletes completing the format individually and in doubles, creating a useful comparison between continuous work and the intermittent recovery available when partners alternate effort.
What we're investigating: whether event format, work-rest structure and individual physiology meaningfully change how thermal strain accumulates during HYROX-style competition.
Summer trail running
What Sinister 7 and Lost Soul are teaching us.
Thermal strain across long races, changing weather and real-world cooling opportunities.
Read summary
Summer trail running
What Sinister 7 and Lost Soul are teaching us.
Thermal strain across long races, changing weather and real-world cooling opportunities.
Tempered collected thermal physiology data from runners at Sinister 7 and the Lost Soul Ultra. Athletes from these community field projects are presented anonymously so the focus stays on broader patterns rather than individual results.
Responses varied substantially. Some runners accumulated meaningful heat strain for hours while maintaining steady effort, while others remained comparatively cool. We also saw examples of skin temperature dropping during races after likely cooling opportunities such as water, ice or stream exposure.
Lost Soul added an interesting contrast: several athletes still accumulated moderate thermal strain over multiple hours, particularly during sunnier parts of the day, despite the 2026 event being a historically cool edition.
What we're learning: a race does not need extreme weather to create meaningful thermal load. Pace, duration, sun exposure, cooling opportunities and individual physiology can make the same course very different from one athlete to another.
Athlete data from community field projects is presented anonymously unless an athlete has agreed to be identified.
Athlete example · Anthony
Measure. Prepare. Race. Learn.
Anthony first worked with Tempered on sweat testing to better understand his individual losses and refine his fluid strategy for long training and racing.
He then took that preparation into the Iron Legs 60K, where Tempered monitored his thermal response for nearly 10 hours. Most of the recorded race remained in a moderate heat-strain range, with relatively little time at high strain and none in the highest category used in the report.
Along the way, Anthony also recorded a 50K personal best. The useful part is the progression: test something, apply it, observe what happens in competition, and use the race to make the next decision better.
Work with Tempered
Bring the question. We’ll figure out what is worth measuring.
Explore athlete testing and coaching, or talk about a project for a team, club or performance organization.