But even still within the realms of the blatantly physical, the human body is capable of so much more than we are generally aware, incredibly, seemingly miraculous feats of strength, or endurance, or abilities to hold ones breath for extended periods of time, or withstand other extremes.
Recently I've been reading up on something called Echo Location. An ability normally reserved for the likes of sonar clicking Dolphins, Bats and possibly other blind nocturnal animals, but it seems that such qualifications are not restricted to these species alone. Indeed, there's a guy out there called Daniel Kisch who teaches people to echo locate, showing that it's a capability well within the reach of humans. Daniel himself is blind since barely a year old, and probably one of the first people to truly exploit this potential we all have.
This is Dan mountain walking with
a group of fellow echo locators
This is by far from being a one off phenomenon, with many other humans (especially sightless) recently also adopting the skill. I think you'll find the following video quite fascinating:
And if you think that's amazing, there are even dogs out there that use echo location as a means of getting around.. see this story of a German Spitz:
Weird and wonderful stuff. (More info on Echo Location at Wikipedia)
Me, a few days ago, taking a bath in a wild creek