Sayer is a biology professor who replicated Spurlock's thirty-day experiment to teach his students about how the documentary medium can be abused to further a political agenda. The difference between Sayer and Spurlock: Sayer didn't deliberately double his daily calorie intake, nor did he stop exercising. He ate three meals per day at McDonalds, diversified what he ate, and was able to keep his calorie count between 2,000 and 3,000. Over 30 days, he lost 17 pounds. His blood pressure dropped. And his cholesterol basically remained the same. He suffered none of the effects Spurlock shows in Super Size Me.