If you're clued up on the latest health and fitness trends, you may have seen the idea of zone zero training doing the rounds. Billed as 'effortless exercise', the idea is not to sweat it out for ...

I sat idly at my desk, scrolling through various social media apps, feeling sluggish and unmotivated. I had a six-mile run scheduled for that afternoon, but my brain was already constructing excuses ...