Not Just Skin Deep
CORE is the first and only core body temperature sensor that delivers continuous, accurate monitoring without invasive e-pills or probes.
How CORE Works
INNOVATIVE THERMAL ENERGY TRANSFER SENSOR
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.
POWERFUL AI ALGORITHM
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.
REAL-TIME DATA TRANSMISSION
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.
What Does CORE Show You?
CORE measures and records several important thermal metrics. They are summarized in the CORE mobile app and some can be displayed live on your connected 3rd-party device.
Heat Strain Index
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 (HSI) quantifies this strain in real time using an algorithmic combination of core and skin temperatures.
Heat Zones
Your Heat Strain Index can fall into 1 of 4 Heat Zones. The heat training zone (Zone 3) is the one that causes physiological adaptations that improve performance. Time spent in each zone is tracked on the CORE app.
Heat Training Load
Your Heat Training Load is the daily value (on a scale of 0-10) of the amount of time spent in the heat training zone (Zone 3). Optimal heat training involves 2–3 sessions per week, with 45–60 minutes per session in the heat training zone. Sequential days with high Heat Training Load will increase your Heat Adaptation Score.
Heat Adaptation Score
Under the right conditions, the human body has an amazing ability to adapt. The Heat Adaptation Score uses an evidence-backed formula to calculate how adapted you are to heat on a scale of 0-100%. Use Heat Zones to guide your training towards high daily Heat Training Loads, which ultimately boost your Heat Adaptation Score over time.
Core and Skin Temperatures
Core body temperature is the temperature near internal organs in the torso. Core temp rises when we exercise, and if it rises too high, performance suffers. Skin temperature varies widely depending on environmental conditions. While skin temp helps your body regulate core temp, there is often little correlation between the two. Both are used to calculate your Heat Strain Index.
Heat Strain Index
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 (HSI) quantifies this strain in real time using an algorithmic combination of core and skin temperatures.
Heat Zones
Your Heat Strain Index can fall into 1 of 4 Heat Zones. The heat training zone (Zone 3) is the one that causes physiological adaptations that improve performance. Time spent in each zone is tracked on the CORE app.
Heat Training Load
Your Heat Training Load is the daily value (on a scale of 0-10) of the amount of time spent in the heat training zone (Zone 3). Optimal heat training involves 2–3 sessions per week, with 45–60 minutes per session in the heat training zone. Sequential days with high Heat Training Load will increase your Heat Adaptation Score.
Heat Adaptation Score
Under the right conditions, the human body has an amazing ability to adapt. The Heat Adaptation Score uses an evidence-backed formula to calculate how adapted you are to heat on a scale of 0-100%. Use Heat Zones to guide your training towards high daily Heat Training Loads, which ultimately boost your Heat Adaptation Score over time.
Core and Skin Temperatures
Core body temperature is the temperature near internal organs in the torso. Core temp rises when we exercise, and if it rises too high, performance suffers. Skin temperature varies widely depending on environmental conditions. While skin temp helps your body regulate core temp, there is often little correlation between the two. Both are used to calculate your Heat Strain Index.
How to Use the Data
How to Use the Data
TRAIN HOT
The human body has an amazing ability to adapt to different conditions over time. Using CORE data and guidance, you can follow heat training protocols to induce heat adaptations that will increase your thermal fitness for race day.
RACE COOL
While racing (and exercising in the heat), track your Heat Strain Index and keep it below thresholds that cause performance loss by taking proactive cooling measures and adjusting pacing.
Getting Started
Available on iOS and Android, the CORE App lets you track and review your heat data, manage the sensor’s settings, and complete firmware updates.
Pair the CORE sensor with your HR monitor, sports watch, bike computer, and training platforms for seamless integration.
Review your heat data in the CORE app, track your heat acclimatization progress, and develop heat awareness to stay cool and perform your best on race day.
Integrate your heat data into training software like TrainingPeaks and Golden Cheetah so you and your coach get get a more informed picture of your performance.
Accuracy and Validation
Accuracy and Validation
We take a rigorously scientific approach to accuracy and validation. Learn about our extensive internal and external testing.