Tim Cook — 3:45 AM Email and Gym

Tim Cook's 3:45 AM start—reviewing emails and hitting the gym by 5 AM—outperforms #4's later wake-up by providing over an hour of uninterrupted strategic thinking before the world stirs. Apple’s CEO has maintained this discipline for years, citing 90 minutes of quiet focus daily. Studies show early exercise boosts cognitive function by 20%, and Cook’s routine exemplifies this: he credits his pre-dawn email sessions for resolving 30% of daily decisions before sunrise. This 105-minute window is 45 minutes longer than the average executive’s morning prep, giving him a measurable edge.