Os Hiraldo is certified by the National Academy of Sports Medicine. He is from North New Jersey, near New York City and took part in track in high school. Os became interested in fitness as he started college at American University in 2015. He focused in bodybuilding with progressive overload, then powerlifting and then combined the methods as he progressed his training. As a young adult and professional, he started bringing in more anaerobic and mobility exercises to have a more integrated approach to training. Os believes that a more holistic approach to training will build sustainable fitness habits that are easily adaptable in one’s lifestyle.

Os believes in the power of a positive and determined attitude. He loves to help members achieve their goals and strive for greatness.