Don Gorske, 70, has extended his Guinness World Record for most McDonald's Big Macs eaten in a lifetime to more than 34,000. In order to maintain his health, he does not eat french fries and walks six miles a day. Advertisement He used to go to the fast food chain every day, but since retiring he buys big Macs twice a week in batches, eating a fresh one at the restaurant and then taking the rest home to microwave when hungry.