Bent double, legs aching, lungs burning, knees knocking into your ribcage as you race against the clock: the Time Trial is cycling in its purest form. But what does it feel like to ride a professional TT and what's the science behind it? In 2015 Alex Dowsett broke track cycling's world hour record by 446 metres. He and Michael Hutchinson - who held the competition record for 10, 25, 30, 50 and 100 miles - join BeSpoke to reveal the finer details and find out why it's better to have hairy legs.