https://www.cnn.com/2019/02/08/politics ... index.html
For the uninitiated: Trump ascribes to what has been described as the "battery" theory of, um, life force. Evan Osnos, in a profile of Trump in the New Yorker a few years back, described it thusly: "Other than golf, he considers exercise misguided, arguing that a person, like a battery, is born with a finite amount of energy."
Exercise, other than golf, of course, is viewed by Trump as an unnecessary drawing down of your battery life.
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"After college, after Trump mostly gave up his personal athletic interests, he came to view time spent playing sports as time wasted. Trump believed the human body was like a battery, with a finite amount of energy, which exercise only depleted. So he didn't work out. When he learned that John O'Donnell, one of his top casino executives, was training for an Ironman triathlon, he admonished him, 'You are going to die young because of this.'"