I gather you like to exercise—that’s fine. But your workout clothes belong in the gym. They do not belong on the way to the gym. They do not belong on the way back from the gym. You may disagree with this in principle, but remember, as you set off down the street in sweatpants, that you might run into your ex-girlfriend, your future girlfriend, your potential employer. Or journalist Gay Talese, a man so formal, he scolded me for not wearing a suitcoat in my official author photo—a tie was not enough.

