Have you ever attempted to do a cardio workout in a cotton t-shirt? If you have, I’m pretty sure you’ll have winced just reading that sentence. The claggy (good word, right) sweat that literally clings to your body as you attempt to writhe out of the shirt is something to behold. Or not… I learned the hard way when I was relatively new to running. I went out on what I thought was going to be an innocent jog in the sunshine, but half way through – and when I say halfway I mean about 500m – the shirt started to stick to me in places nothing should ever stick to. I was a sweaty mess and my t-shirt just wasn’t giving me the benefit of the doubt. Fast forward a few years and I’d like to think I’ve learnt a thing or two about appropriate training gear. So when I was asked if I wanted to review a top that claims to be the ‘world’s best workout shirt’, which apparently cools you down the …