Not a mutation.
I have an inbuilt compass.
By that i mean when i dont have a map or compass i always know which way to travel as somehow i can sense which is the right direction to go in.
And an extra thick skull it seems as i have never been knocked out.I hit my head on the floor of a swimming pool once very hard ,been hit on the head by a flying pebble that someone threw as big as the palm of your hand [everything went black for a second and i saw stars , and have been headbutted by 2 people at once ,one in front ,one behind and barely noticed it in a sort of "Is that it ?" kind of way.