In a world where we are having to work harder than ever before, where talk of ‘burnout’ is everywhere and where pressures increase in many areas of our lives, some of us are turning to endurance sport and extreme challenges. Pushing human limits has even become enmeshed with pushing technological limits, a cultural obsession fed by a multibillion-dollar technology industry led by the likes of Fitbit and Apple. ‘To the Limit’ asks why this might be and what kind of meaning we attach to our ability to endure. Michael Crawley immerses himself in various endurance cultures and asks what makes enduring together meaningful to people.