VO2 max - the measure of how much oxygen your body can get to your muscles - has tended to  grab all the headlines when it comes to evaluating endurance running performance. After all, it's relatively straightforward to measure, gives quantifiable

to be faster than a thinner runner if the heavier runner has the necessary ingredients for better endurance: higher VO2 max, higher lactate threshold and better running economy. Genes play a huge role as well, as does experience. GGWell, sure, it

for a heavier runner to be faster than a thinner runner if the heavier runner has the necessary ingredients for better endurance: higher VO2 max, higher lactate threshold and better running economy. Genes play a huge role as well, as does experience