[null and void]

If you don't like running, don't run.

I don't. I don't.

That being said, distance running is one of the few things a human (well, a normal human, not me!) can do that no other critter can...

[386wt]

...can do that no other critter can...

That is a big clue. We we are not designed to run long distances. No other animal is either.