I am no gymnist or anything but I have a surprisingly acute sense of weight and balance, coupled with hearing and eyesight. Like if I touch and object, or hear it resonate from being hit with something, I can accurately guess the amount of force I will need to apply on it to lift it while blindfolded. If I am running through a crowd, I don't get blindsided because I can hear how sound bounces around in the crowd, and when a gap in front of me is about to move, close, etc.