Mark Sisson

Mark Sisson (born July 20, 1953) is an American fitness author, food blogger, and a former distance runner, triathlete and Ironman competitor.

Biography Sisson was born in Maine and is the oldest of four siblings. He attended Williams College, where he was a pre-med candidate and earned a biology degree.

Sisson finished 4th in the February 1982 Ironman World Championship. In the 1970s, he was a record-setting runner for the Portland (Maine) Track Club. He had a top-5 finish in the 1980 U.S. National Marathon Championships and earned a qualifying spot for the 1980 U.S. Olympic Trials. and markets his own version of it, called the "Primal Blueprint" diet. As part of this initiative, he started a food blog, "Mark's Daily Apple," in 2006 and has also written a number of diet and exercise books;

Sisson served for 15 years as chairman of the International Triathlon Union (ITU) Anti-Doping Commission and as the ITU's liaison to the International Olympic Committee.

Primal Health Coach Institute In 2017, Sisson co-founded Primal Health Coach Institute, a health coach certification school, with business partner Aaron Fox.

Peluva In 2021, Sisson and his son, Kyle Sisson co-founded Peluva, a barefoot shoe brand.