Mark Zuckerberg — No Decision Fatigue Wardrobe

Mark Zuckerberg eliminates trivial morning choices by wearing the same gray T-shirt and hoodie daily, a decision that saves an estimated 10 minutes each morning and frees cognitive bandwidth. Research from Cornell University shows this type of decision fasting can reduce decision fatigue by up to 30%, giving him an edge over #6 Arianna Huffington, who dedicates her first hour to gratitude journaling. For Zuckerberg, this streamlined routine ensures his mental energy is reserved for high-stakes meetings at Meta, where he oversees over 50,000 employees.