So despite running the same distance as Ichinose, who is clearly exhausted, Nagisa seems completely fine.
Does she have more stamina than Ichinose? If so, is that greater than normal?
She says she didn't do any running drills in middle school, suggesting that she doesn't practice.
Is she a prodigy!?
Could she potentially be athletic!?!?
IS THE JOKE THAT SHE MIGHT ACTUALLY BE A DECENT BASEBALL PLAYER DESPITE KNOWING NOTHING ABOUT THE GAME!?!?!?