Runners love complexity. We’ll analyse cadence, obsess over carbon-plated shoes, debate fuelling strategies and build spreadsheets around zone training. But according to endurance coach David ‘Jacko’ ...

Walk into any gym and you'll see the same rituals playing out day after day: people hammering crunches in hopes of flattening ...

As soon as I laid down that evening, I felt a deep pain in my chest, followed by an intense pinch in my left armpit. I put my clothes back on and drove myself to the hospital. I knew something was ...