pass thanks to the purchase of a new pair of trainers or an unexpected PB. But if your results and motivation just don’t seem to be picking up by themselves, it could be time to turn to a running coach for help. We know what you’re thinking: running
to rip 'em off after a speed session as the very act of running most definitely is. Researchers at the University of North Carolina found athletes who exercised at 70 per cent of their VO2 max experienced a 40 per cent increase in free-testosterone, a 38
