I certainly can concentrate on things better if I'm barefoot - because I don't have the distraction of my feet burning up and screaming at me to take my shoes off. Also, just thinking about nudity as a performance enhancer, well you wouldn't know from seeing the film Troy but the Greeks used to train and fight naked.
Didnt need to see a movie to know that. The Greeks played the original olympics nude. Supposidlly the first marathon runner lost all his clothes when they started and thats why the did it all in the nude.
Nah, Pheidippides would have come naked from the battle anyway. The word Gymnasium comes from the greek word Gumnos meaning Naked.