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 ...

Core is a useful wearable body temperature sensor for those battling heat training – but there are some fundamental snags to iron out. Core Body Temperature Sensor is an unobtrusive way for athletes ...

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 ...

It's a little fussy to set up, but gives real insights into how your body is responding to hot weather exercise. Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a ...