Train and race with real-time

CORE body temperature monitoring

Used by athletes, coaches and sports scientists

Core body temperature affects performance and safety

As you heat up, your power and pace decline.

The CORE sensor helps you to adapt and improve your performance when you get hot. Easily integrate CORE data into your existing training to unlock your full potential on race day.

How you can use the CORE sensor

Advantages of monitoring core body temperature

Heat Training for Sports
Heat Training

More effective and precise heat adaptation and acclimization to condition your body for better performance.

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Active Cooling for racing performance
Optimize Racing

Strategic cooling suited to your individual temperature behaviour on race day.

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Avoiding overheating while racing
Avoid Overheating

Set your own safe limits to maximise performance while avoiding overheating.

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Real-time data and trends

Train more effectively and stay in control when you race with real-time core body temperature data and trends.

How to use CORE data

Used by top athletes and teams

Kristian Blummenfelt CORE sensor

Kristian Blummenfelt

Gustav Iden CORE sensor

Gustav Iden

Alistair Brownlee CORE sensor

Alistair Brownlee


Up to now, core body temperature could only be measured continuously using invasive methods like thermometers, probes and electronic pills or in a controlled environment.

The CORE sensor is the first wearable device that continuously and accurately measures core body temperature on the go.

The CORE sensor seamlessly integrates and lets you see your live data on the Smart Phone App and record directly to Garmin, Wahoo and COROS. Learn More

Get a CORE sensor


How to use Heat Training and the Heat Ramp Test for sports.

Heat Training for Performance

Heat affects performance

“In long distance running events, the ability of bodies to maintain or regulate heat is what ultimately determines how long athletes can last at a given intensity, along with their internal energy state and their fitness,”
Peter Vint, High Performance Sport Expert

Temperature verses speed

With an environmental temperature of 10°C/50°F, our runner can finish a marathon in 3:30.

For each 5°C/9°F increase in outside temperature, the runner needs an extra 5 minutes to finish.

Why Core body temperature matters in sports

No more guessing how hot or cold you are, with the CORE sensor and accurate measurement data you can train and race more effectively.

CORE's role in the Filippo Ganna UCI Hour Record

Filippo Ganna of team INEOS Grenadiers set the current UCI hours record of 56.792 km with the support of past hour record holder Dan Bigham and from the experts at CORE.

CORE Body Temperature Sensor

plus accessories to complement your CORE

The CORE sensor uses innovative sensor technology created in Switzerland and utlised by experts worldwide.

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Internal and external studies and scientific research projects using the CORE sensor are documented here.

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