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I Used the Core 2 Thermal Sensor to Train for the Summer Heat, and I Think It Actually Worked

The Core 2 sensor gives you three numbers whenever you wear it: Your core temperature is the temperature inside your body, specifically inside your torso (your core). Some studies test this with a ...
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First Look: CORE 2 Thermal Sensor is Smaller & Lighter to Make You Faster in Hot Weather

The next-gen CORE 2 sensor is out now – the latest tiny gadget developed to make you a faster cyclist. While this one doesn’t require a huge amount of extra effort, it will add a new heat stress ...