Mark Zuckerberg took on one of the most surprising personal challenges I’ve ever seen. I walk you through the year he decided to eat only meat from animals he personally killed. Mark learned from farmers, chefs, and even his neighbor Jesse Cool to make sure he did it humanely. He shocked friends with posts like “I just killed a pig and a goat,” and even served Jack Dorsey a goat he cooked himself. This challenge pushed Mark to eat healthier, think deeper about gratitude, and understand the real cost of food. It also shows the same discipline he used to build Facebook from a Harvard dorm room into a global company.