John Sim is an O2X Strength & Conditioning Specialist. He is also currently a Physical Skills Instructor for the U.S. Secret Service and previously served as the Program Manager for Physical Performance at the Office of the Surgeon General (OTSG). Prior to working at OTSG, John served as the Human Performance Advisor for a US Army Special Operations unit based in the National Capital Region. Throughout his career John has worked with a diverse array of clientele that includes tactical, collegiate, and professional populations. John’s strength & conditioning coaching experience includes stops at Georgetown University, Fordham University, Binghamton University, EXOS Headquarters, and Grand Canyon University – where he was hired as the school’s first Graduate Assistant Strength & Conditioning Coach. Upon completing his commitment at GCU, John was hired by the Army to help develop the first Strength & Conditioning program at US Army Garrison – Yongsan in Seoul, Korea. For the next several years, John continued to make a positive impact in the peninsula by leading various health and fitness programs for both the Army and the Air Force. He was eventually hired to stand up the first Army Wellness Center (AWC) in the country and finished his overseas tenure by serving as the inaugural AWC Director at Camp Humphreys. John is certified through the NSCA as a Certified Strength & Conditioning Specialist (CSCS), Tactical Strength & Conditioning Facilitator (TSAC-F), and Certified Personal Trainer (NSCA-CPT). He is an ACSM Certified Exercise Physiologist (ACSM-EP), and is also certified through NASM as a Performance Enhancement Specialist (PES) and Corrective Exercise Specialist (CES). John’s education includes a BA in Psychology, an MBA, and MS in Health & Human Performance. During his spare time, John enjoys training in Brazilian Jiujitsu along with his wife and two children.