Interoception is how your brain senses and responds to what’s going on inside your body. “It’s how we know when we’re hungry, thirsty, anxious, or even need to take a deep breath,” says Wen G. Chen, ...

Sometimes our bodies react to the world around us before we realise, so how do internal signals such as a quickening heart or deep breathing affect our thoughts? It was day 29 of a gruelling 600-mile ...