How It Works
Other types of wearable thermometers just record skin temperature, the CORE sensor incorporates a Swiss-made thermal energy transfer sensor that detects heat moving from or into the body.
Input from the thermal energy transfer sensor is processed by an onboard algorithm built from over one billion data points. This machine learning power means the sensor can be continually optimized.
Like other sports sensors, the CORE sensor transmits data to paired devices automatically. Just keep it charged, shake it before an activity, and check for the flashing green light.
It’s Easy To Get Started
Available on iOS and Android, the CORE App lets you manage the sensor’s settings and complete firmware updates.
Then, attach it to your HR monitor strap or affix it to your skin with one of the included adhesive patches.
The CORE sensor sends real-time data to paired devices and saves a minimum of two days worth of data internally as long as the unit is charged. Unlimited data can be stored when the sensor is synced with the CORE app so trends can be measured over time.
Additional CORE sensor data recorded by your sport-tech devices can be viewed on popular training software including Today's Plan, TrainingPeaks and Golden Cheetah to analyze core body temperature alongside other data.
What does CORE show you
CORE measures and records five important metrics. They are displayed live on your sports-tech device, and summarized in the CORE mobile app.
What does CORE show you?
CORE measures and records five important metrics. They are displayed live on your sports-tech device, and summarized in the CORE mobile app.
Core body temperature
is the temperature near internal organs in the torso. Core temperature normally fluctuates within a narrow range throughout the day and night. Core temp rises when we exercise, and if it rises too high, performance suffers. The CORE sensor continuously records your core temperature.
Skin temperature
varies widely depending on environmental conditions. While skin temperature helps your body regulate core temperature, there is often little correlation between the two. It’s possible for your skin to be cool (and you will feel cold) while your core temperature is quite elevated. The CORE sensor continuously records your skin temperature.
Heat strain
Heat strain describes the physiological processes that cool the body. The harder the body works to cool itself, the greater the strain, and the greater the impact on performance. CORE’s Heat Strain Index quantifies this strain in real time, and the Heat Strain Score calculates the cumulative daily strain.
Temperature zones
are the narrow ranges of the body’s core temperature. Importantly, the heat training zone is the one that causes physiological adaptations that improve performance. Time spent in each temperature zone is tracked on the CORE app.
Thermal load
Thermal load is the amount of time spent in the heat training zone. Heat training involves 2–3 sessions per week, with 45–60 minutes per session in the heat training zone. The CORE app tracks this thermal load by the week, month, and year.
Core body temperature
is the temperature near internal organs in the torso. Core temperature normally fluctuates within a narrow range throughout the day and night. Core temp rises when we exercise, and if it rises too high, performance suffers. The CORE sensor continuously records your core temperature.
Skin temperature
varies widely depending on environmental conditions. While skin temperature helps your body regulate core temperature, there is often little correlation between the two. It’s possible for your skin to be cool (and you will feel cold) while your core temperature is quite elevated. The CORE sensor continuously records your skin temperature.
Heat strain
Heat strain describes the physiological processes that cool the body. The harder the body works to cool itself, the greater the strain, and the greater the impact on performance. CORE’s Heat Strain Index quantifies this strain in real time, and the Heat Strain Score calculates the cumulative daily strain.
Temperature zones
are the narrow ranges of the body’s core temperature. Importantly, the heat training zone is the one that causes physiological adaptations that improve performance. Time spent in each temperature zone is tracked on the CORE app.
Thermal load
Thermal load is the amount of time spent in the heat training zone. Heat training involves 2–3 sessions per week, with 45–60 minutes per session in the heat training zone. The CORE app tracks this thermal load by the week, month, and year.
How to use the data
While heat training or adapting for a hot race, monitor core temperature in real-time to stay in your heat training zone. This way you’ll adapt without overheating yourself. Track your weekly and monthly thermal load to ensure you maintain your adaptations.
While racing (and exercising in the heat), track your core temperature and Heat Strain Index. Keep them below thresholds that cause performance loss by taking proactive cooling measures.
Accuracy and validation
We take a rigorously scientific approach to accuracy and validation. Learn about our extensive internal and external testing.