stamina

Known in his prime for his decisive and quick victories by knockout, it was clear that Tyson didn't quite have the stamina for 16 full minutes of boxing.

From early on it was clear this was a man nearing his sixties, who still carried a little power but no stamina.

And for a campaign that had focused on Biden’s age and frailty, it is now Trump whose stamina and coherence are under the microscope.

Trump campaign spokesman Steven Cheung said in a statement Friday that Trump has “more energy and more stamina than anyone in politics, and is the smartest leader this country has ever seen.”

“Our mental stamina is as good as any team we’ve had. The longer a match goes the better these girls are at figuring things out.”