An Iowa science teacher lost 37 pounds over the course of 90 days by eating nothing but McDonald's. Kind of the opposite of what happened in Morgan Spurlock's 2004 documentary Super Size Me. (Although Spurlock only ate McDonald's for a month, maybe he didn't stick it out long enough?)
John Cisna had his students help him plan a meal regimen that followed federal dietary recommendations, which recommend a daily intake of about 2,000 calories. Cisna says he didn't stick to McDonald's healthier options — no one eats those, anyway — although his Value Meal dinners were offset by salads for lunch. (All of which, by the way, his local McDonald's provided for free.) Cisna also began walking for 45 minutes each day, and remarked on the added exercise: "My mind says yes, my body says holy buckets batman." The project will apparently be turned into a documentary, so stay tuned. Below, local news channel KCCI's report on Cisna.
Update 8/12: Cisna is now a spokesperson for McDonald's. From McDonald's official statement: "Today, John serves as an official brand ambassador for McDonald's and travels the country sharing his story about the importance of choice and balance."