Jack Dorsey's daily commute is a reasonable five miles but it takes him over an hour to get to work. That's because he walks. The Twitter and Square CEO posted his walking stats on Twitter on Wednesday, adding that he's been commuting on foot "for 2 years now. Usually get it done in 1h 15m, but was feeling tired this morning."

As author Tim Ferriss writes in his book "Tools of Titans," Dorsey believes the most worthwhile investment he's ever made is "taking the time to walk to work every day." During the five-mile trek, the self-made billionaire unplugs. He doesn't email or text. He uses the time to listen to music and audio books or simply to think and draw inspiration from the streets of San Francisco. "It's a very clearing time," Dorsey told CNN Money. "I want to put as much unexpected potential in front of me because I think something that you don't plan will always make you think differently." It's also good exercise, which is a key component of Dorsey's lifestyle and success. His morning routine involves waking up at 5 AM, meditating for half an hour and doing a seven-minute workout three times through. As the CEO told Y Combinator: "A healthier lifestyle ultimately makes me more creative and allows me to think more cohesively."