While training women and athletes at his Scottsdale fitness studio, Bret Contreras “The Glute Guy”, a Certified Strength and Conditioning Specialist and personal trainer, developed some unique exercises and methods that target the glutes. Suspecting that his methods were much more effective than what the other experts were doing, Contreras ventured out to scientifically measure how hard the glutes were contracting during various “glute” exercises. He was trained by Noraxon to test the electrical activity of muscles, a process known as electromyography or EMG.