i mean it makes sense. endurance running is about efficiency, not raw power output. it would make sense that you would aim for a strong cardiovascular system,

i mean it makes sense. endurance running is about efficiency, not raw power output. it would make sense that you would aim for a strong cardiovascular system, strong digestive system, and a limited amount of very efficient muscles. looking at pro runners they're all kinda skinny. they optimized their body for the distance.