Another interesting article:
Researchers say elite distance runners share several inborn physiological traits, including large hearts, an efficient way of moving and an ability to keep running when they are exerting so much effort that they are panting for breath, that make them faster than most recreational runners.
I’ve done some reading about VO2 max, or maximal oxygen uptake, and I have a suspicion that I fall woefully short there as a runner. Breathing is where I really struggle. I think it’s the years of cigarette smoking, even though I quit more than seven years ago. But it’s just as likely that I’m just not genetically gifted as a runner.
Oh well. Off I go to struggle on the treadmill. 😉