Heber Cannon and Marston Sawyers are the filmmakers behind the hit CrossFit Documentaries: "Froning: The Fittest Man in History" "Fittest on Earth 2015" "Fittest on Earth: A Decade of Fitness" and "The Redeemed and the Dominant: Fittest on Earth"
They have started a high quality production weekly vlog on YouTube called Buttery Bros that showcases various elite CrossFit athletes as well as friendly competition between Heber and Marston. The Bros also have a new docu-series coming out called "Fittest" covering the Journey of the 2019 CrossFit Games.
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