If you've spent any time at all in a gym lately, the chances are you'll have tried (or seen someone else) working out on a Stairmaster. And even if you avoid the gym at all costs (and we hear you!), there's no escaping the trend, as it gains traction on social media.
There are Stairmaster challenges all over our FY pages right now, with fans hailing the workout as unrivalled for boosting fitness, endurance and seriously strengthening the legs. And, after doing a little bit of digging around the trend, it's safe to say we can see why.
