David Meyer is a jiu-jitsu pioneer in the United States. A black belt under Rigan Machado (1996), Meyer became part of the well known BJJ Dirty Dozen - the first 12 non-Brazilian natives to achieve the rank of black belt in this martial art, while being also the first American to medal in the International Brazilian Jiu-Jitsu Federation's (IBJJF) World Championship (1998). David Meyer is also a strong advocate for plant-based diets in combat sports through his Fuel For The Fighter project, an endeavor heavily supported by several plant-based mixed martial arts fighters such as Jake Shields, Nick Diaz, Nate Diaz, and James Wilks. Outside the world of combat sports Meyer is also the founder of the Adopt A Pet - North America's largest non-profit pet adoption website.