Less stress. Matilda Kahl, an art director in New York cites both decision fatigue and less time getting ready as her reason for wearing the same outfit everyday. But she adds another: less stress — specifically, less stress during the day over the decision she originally made in the morning. 'Is this too formal? Is that too out there? Is this dress too short? Almost always, I’d choose something to wear I regretted as soon as I hit the subway platform.' But now, in her trademark silk white shirt and black trousers, she has one less source of anxiety during the day.