The Team

sleeping tiger fitness owner operator trainer coach

Nathan Zimmerman MS, CSCS, USAW, SFG

Owner and Operator

Nathan is a certified Strength and Conditioning Specialist through the NSCA, a certified level 2 Sports Performance Coach through USA Weightlifting, and a certified a Strong First Girya Instructor. He holds a MS in Kinesiology from Cal Poly, SLO. Nathan assisted at a SFG(certification) for the first time in November, 2015. His experience includes working as a physical therapy aide at the Body and Balance Center in San Luis Obispo and as a volunteer aide at Bell Trace in Bloomington, Indiana. At Bell Trace, he treated shoulder, knee, hip, and back injuries. Nathan also had the privilege of interning at Athlon Elite under Ryan Joiner. Since then he has gained experience in the fitness field through working at the Cal Poly Rec Center as a personal trainer, as well as helping with strength and conditioning for a local kickboxing team. Nathan has trained with and learned from the likes of well known and influential trainers in the strength and conditioning community including Dan John, Pavel Tsatsouline, Doug Nepodal, Brett Jones, Jeff O’Connor, Max Shank, Kelly Starrett and David Whitley.

KT Streder MS, CSCS, USAW II

Cofounder and Operator

KT is a Cal Poly graduate with a MS and BS in Kinesiology and a certified Strength and Conditioning Specialist. She is a certified level 2 Sports Performance Coach through USA Weightlifting as well as being newly certified by Waxman’s Gym for Olympic barbell training. KT has also been training “Russian style” kettlebells since 2010, originally learning from the RKC, then making the switch to Strong First to continue learning from Pavel Tsatsouline. In her undergrad she worked with Todd Hagobian, Ph.D., as a research assistant examining exercise’s effect on appetite hormones, resulting in KT becoming a published co-author for the study. Additionally she was an assistant coach for SLO High School’s shot put and discus throwers from 2009 to 2011 and Mission Preparatory High School’s Strength Coach from 2015 to 2017. As a graduate student, KT taught exercise physiology and biomechanics labs while conducting her thesis comparing the effects of motor learning principles on strength training program design, with Kellie G. Hall, Ph.D. In addition to her position at STF, KT has been a part-time lecturer at Cal Poly in the Kinesiology department since 2014.

Coach Darby USA Boxing, UKA

Boxing and Kickboxing Coach

Coach Darby is an accomplished and diverse martial artist who has trained in traditional Boxing techniques, Khmer Boxing and Muay Thai.  Darby has studied martial arts for over 30 years and has been teaching for the past eighteen years. He specializes in Boxing, Khmer Boxing and Muay Thai.  Darby started his boxing education in 1977  in the School of Hard Knocks and has continued to learn ever since.

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