Yes Theory is a movement that encourages people to say YES on doing things outside of their comfort zone and it is built around its Youtube Channel  featuring Thomas Brag, Matt Dajer, and Ammar Kandil.

They try to put themselves in difficult, mentally challenging situations, staying away from their comfort zones and to go and live through life's greatest moments and to go chase your dreams.

"Seek Discomfort" is what they like to call it. Seeking discomfort allows us to learn and grow from not only what we are used to but to explore and experience the world from an entirely different and at the same time life changing point of view.