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CORE Sensor

CORE is the first and only completely non-invasive wearable that delivers continuous, accurate core body temperature monitoring — without invasive e-pills or probes.

DISCOVER MORE ABOUT CORE Sensor Technology

Your core body temperature rises during intense exercise, and when it crosses a certain threshold, your power and pace decline. By the time you notice you’re hot, it’s already too late. That's why the best coaches and athletes use core body temperature monitoring and training to outperform the competition. Heat training improves performance and keeps you safer by adapting your body to internal and external heat.

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KRISTIAN BLUMMENFELT
Tom Evans
JULIA MAYER
FREQUENTLY ASKED QUESTIONS Why Use CORE?

WHY DOES CORE BODY TEMPERATURE MATTER FOR PERFORMANCE?

Your muscles generate heat when they’re working hard. Generate enough heat, and your core body temperature will rise. Your body will try to cool itself by diverting blood from the muscles to the skin where it’s cooled by sweat evaporation, which leads to decreased speed and performance. But you can minimize this effect in two ways. First, by monitoring your core temperature, you can make strategic cooling and pacing decisions during training and racing, helping you stay cool and maximize your performance. Second, you can use heat training to help you adapt to higher internal body temperatures come race day.

WHAT DATA DOES CORE MEASURE AND DISPLAY?

The CORE sensor measures both core body temperature and skin temperature. Those metrics are displayed live in the CORE app and on compatible sports tech devices. The app and some Garmin devices also display the real-time Heat Strain Index, which shows the amount of heat stress the body is experiencing.

HOW DO I USE CORE DURING A WORKOUT OR A RACE?

When you’re heat training, use CORE data to keep your core temperature within your heat training zone. During racing, CORE data can tell you when to use cooling strategies and when to reduce power/pace so that you don’t overheat.

IS THE SENSOR REALLY ACCURATE? HOW IS IT TESTED?

The CORE sensor measures thermal energy transfer between the body and the environment. An AI-powered algorithm uses this data to calculate core body temperature with medical-grade accuracy. Extensive testing has validated the accuracy of CORE data against internal body temperature data collected with more invasive methods, like ingested electronic pills. This means that athletes can reliably use CORE data to understand what is happening inside their body, with a completely non-invasive wearable that’s the first of its kind.

IS CORE COMPATIBLE WITH MY CURRENT SPORTS TECH?

The CORE app is available on both iOS and Android platforms. The sensor is compatible with most watches and cycling computers from Garmin, as well as a selection of devices from COROS, Suunto, Wahoo, and Hammerhead. Functionality with Apple and wearOS watches is still limited, but improved. Training software with full compatibility include Today’s Plan, Intervals.icu, and Golden Cheetah. The premium version of Training Peaks is also compatible.

DO I NEED A HEART RATE MONITOR IN ORDER TO USE CORE?

To get the most precise data during sports activity, we highly recommend pairing with a heart rate monitor. Heart rate helps the sensor accurately convert measured heat flux into core body temperature. During everyday activity (ie. non-sports), core temperature data is accurate both with and without a heart rate monitor.

  • CORE CORE Sensor XMiles
    CORE CORE Sensor XMiles
    CORE

    CORE Sensor

    €359,69

    The CORE Sensor introduces a revolutionary approach to fitness monitoring with its continuous and precise tracking of core body temperature. Desig...

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  • CORE Arm Strap XMiles
    CORE Arm Strap XMiles
    CORE

    Arm Strap

    €18,77

    CORE can be worn on the arm. Many people find the convenience of wearing CORE on the arm strap (compared to a chest strap) an acceptable trade-off...

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  • CORE Arm Strap XMiles
    CORE Arm Strap XMiles
    CORE

    Chest Strap

    €15,64

    For the most accurate core body temperature measurements, CORE is worn on the chest. The chest strap is a convenient and reusable solution for wea...

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  • CORE Adhesive Patches XMiles
    CORE Adhesive Patches XMiles
    CORE

    Adhesive Patches

    €29,71

    Our medical-grade patches are convenient way to wear your CORE. This version is suitable for sports use, as it will endure sweat and intense physi...

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  • CORE Securing Clips XMiles
    CORE Securing Clips XMiles
    CORE

    Securing Clips

    €4,69

    Each CORE comes with the securing clips to ensure your CORE will not accidentally come off your heart rate or other strap. Two (2) securing clips ...

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  • CORE CORE Team Bundle XMiles
    CORE CORE Team Bundle XMiles
    CORE

    CORE Team Bundle

    €2.162,79

    The CORE Team Bundle is great value for any team or organisation who require several CORE Body Temperature Monitoring devices with the convenience...

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