That was my fifth or sixth marathon and the first one that I really tried to nail the four-hour benchmark. That said, the conditions that day were *chef’s kiss* perfection—cool, sunny, and a perfectly ...

In addition to “The 4-Hour Workweek,” which has sold 2.1 million copies, Ferriss is the author of “The 4-Hour Body,” “The 4-Hour Chef,” “Tools of Titans” and “Tribe of Mentors.” ...