Flamestrike
Legend
That's precisely an 'average, healthy real-world human.'No, they can't. Because an "average healthy real-world human" is not an army or marine draftee,
You'll only get rejected from the forces (on physical grounds) if you're not healthy (so either a medical condition, or you're chronically unfit).
So (in medical terms) you're not healthy.
And, whilst it would be reasonable to suppose that an average D&D fighter is at least as capable as a modern military recruit,
Guy in the gym fallacy strikes again.
Your average D&D fighter is leagues above a dude in basic training in the Army. By T3/4 he's literally a character from a Marvel movie, able to be doused in magma or fall from the Empire State building and survive, or take on a literal Demon or a T-Rex with a hammer and win.