We judge falling objects better when upright

 

Washington: You can best determine the actual position of the Leaning Tower of Pisa when you are upright, according to a new study. Newton’s laws of motion predict that an object will fall when its centre-of-mass lies beyond its base of support. But how does your brain know whether the tower will fall or not?

Scientists from the Max Planck Institute for Biological Cybernetics in Tubingen, Germany, have found that although the physical laws governing object stability are reasonably well represented by the brain, you are a better judge of how objects fall when you are upright than when you lay on your side.

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