Kyle Kingsbury is a retired American UFC fighter. He's now the chief biohacking guinea pig at Onnit and is an absolute wealth of knowledge and humor.

A professional competitor from 2006-2014, Kingsbury also formerly competed for King of the Cage and was a cast member of Spike TV's The Ultimate Fighter: Team Nogueira vs. Team Mir.

He's also one of my dearest friends on this globe, enjoy!