Yes, actually... Have you ever punched something so hard your knuckles bleed? Hurts like hell when you don't notice and punch again...
Yes, just the marathon... Have you ever had a fight with someone bigger and stronger than you and won? The feeling is great
Nope... Have you ever gotten a home run in baseball with the bases loaded and everyone thinks you can't do it? I'm just like "suck it, losers!"