Running also increases caloric and definitely doesn't reduce lifespan in humans. So the abstraction "increase energy causes bodies to wear out faster" is very leaky, and probably so leaky that it's not super useful.
Depends how you count it. Humans are quite effective engines - number of calories burned per hour of running is quite low, and you only do it for limited number of hours per week.
At the same time runners tend to be the kind of people that are very concerned about their health, so they eat healthy food, with moderation.
So overall caloric intake of a runner can be much less than that of obese couch potato.
At the same time runners tend to be the kind of people that are very concerned about their health, so they eat healthy food, with moderation.
So overall caloric intake of a runner can be much less than that of obese couch potato.