Considering he's got a BMI of 25 (6ft 2in/195lbs), I think he is not entirely honest about not eating much beside 2 Big Macs every day. At his size and weight, he has a Basal Metabolic Rate of about 1,745 calories per day, which means he'd easily burn 2400 calories if he's as active as he says he is.  So he's either eating even more Big Macs, which he would probably tell everyone about, or eats quite a bit of other food as well.  I'm betting on the second part, since his wife is a nurse and according to him 'eats a lot of vegetables'. My guess is that his wife prepares him some healthy foods, to balance out the Big Macs. My favourite part is his wifes' opinion on the entire thing: “She’s fine with it. She doesn’t mind. She eats a lot of microwaved stuff vegetables and stuff like that. We made an agreement when we got married that I could eat Big Macs if I didn’t get fat.