User blog comment:Okanio Auditore/Some questions about AC III/@comment-4829046-20120630090615/@comment-4564231-20120630105346

A regular person at the age of 52 can't sprint uninterrupted for 300m without being fatigued either. I doubt they'd be able to swim across the Golden Horn too, but you could do it in the game. Adding fatigue would completely ruin the Assassin's Creed experience.