Title: Owner
Company: JK Strength and Fitness LLC
Location: Villa Park, Illinois, United States
Jon D. Kosrow, MS, CSCS, USAW, owner of JK Strength and Fitness LLC, has been recognized by Marquis Who’s Who Top Business Owners for dedication, achievements, and leadership in fitness.
Since opening JK Strength and Fitness LLC in 2020, Mr. Kosrow has been able to realize his vision of establishing an education-centric gym committed to reintegrating the core principles of physiology and science into the fitness domain. He and his staff aim to provide fitness training to guide members in achieving fat loss, muscle mass gain, and desired body composition transformations, and to educate attendees on exercise science. Along with instructing the majority of classes, Mr. Kosrow oversees three employees and administers internship programs for regional students from National Louis University, Illinois Wesleyan University, Benedictine University, and Elmhurst University. His hands-on approach enabled JK Strength and Fitness LLC to achieve the distinction of being the Number One Small Business in Villa Park, Illinois, in 2022 and 2023.
Prior to opening his facility, Mr. Kosrow gained valuable experience by working in a training capacity for several gyms. This included stints as an exercise physiologist at Training for Warriors from 2019 to 2020 and as a strength and conditioning coach for E-Town Fitness from 2018 to 2019. Additionally, Mr. Kosrow brought his acumen to the faculty of multiple schools, serving as director of strength and conditioning at Miles College from 2015 to 2018, as assistant strength and conditioning coach at Carroll University from 2013 to 2015, and as an intern strength and conditioning coach at Samford University in 2014. Earlier, he was employed as a certified personal trainer and a fitness specialist for Fitness Formula Clubs in 2013, as a personal trainer for Life Time, Inc. from 2011 to 2012, and as a certified personal trainer for Bally Total Fitness from 2009 to 2011.
After garnering recognitionas an inductee of Who’s Who Among American High School Students, Mr. Kosrow obtained his Bachelor of Science in exercise science from Carroll University in 2009. Returning to the Wisconsin campus, he received his Master of Science in exercise physiology from Carroll in 2015. Along with his degrees, Mr. Kosrow earned his USA Weightlifting Level I certification in 2015, and was certified as a strength and conditioning specialist by the National Strength and Conditioning Association in 2014.
The path to a career in fitness began with the values instilled in Mr. Kosrow by his father, who emphasized the importance of diligence, self-reliance, and taking initiative. Along with those early lessons, a devotion to football from the peewee level through college established an understanding of dedication and commitment to goals. But while the athletic background sparked a love for exercise, Mr. Kosrow felt unfulfilled in his professional life as an employee of numerous “big box” gyms, and he aimed to foster a community of like-minded people dedicated to achieving their health objectives while enjoying a supportive environment. To that end, Mr. Kosrow attributes his success to his determination to establish his own fitness space, where he can apply his philosophy and methods to positively impact as many individuals as possible.
As part of his future goals, Mr. Kosrow aims to open one or two additional facilities to expand the reach of JK Strength and Fitness LLC, although he is adamant about not compromising the quality that comes with small-business ownership. A husband and a father, he cherishes spending free time with his family, and counts nature hikes, watching movies, and sampling new cuisines among his interests. Mr. Kosrow also enjoys traveling to new destinations, and hopes to one day treat his wife to a memorable safari experience in Africa.
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