> Re: the football team though, no matter how energized they are, that team will not be able to lift more than their 1RM (1 rep max), they won't be able to lift their 10RM (10 rep max) more than 10 times (maybe a few more on a good day). Eventually there are physical limits to their ability. Similarly if that team had not slept for 48 hours, or had done non-stop math problems for 18 hours and was asked to continue doing them.
I want to challenge your thought experiment. Consider Navy Seal training. Pushing through via sheer force of will isn't possible. There needs to be a cycling and restorative process that enables above and beyond grit.
Clip of Prof Huberman on "quitting behavior" such as quitting a long bout of work. (Note: Noradrenaline is norepinephrine. It's a weird historical thing where two teams discovered it and nobody agreed on the real name)
https://podclips.com/ct/y4Ucji
Good Joe Rogan with Huberman.