“Stamina”: an unusual word in the mouth of Donald Trump

Candidate’s debate on September 26th 2016 brought a word seldom used by people. Who has more endurance? Who of them showed more “stamina”in the debate?
Hillary Clinton demonstrated with words and actions that has more stamina than Trump. She did not drank water in whole debate. Trump tasted water about five times and was very incoherent in his words.