Cooper Napoli started at the front desk of an Equinox in 2017. He became a trainer at the Chicago Loop location and earned an internship at Westside Barbell. After he completed his internship there, Cooper started his business Delta-Five Performance. In the Elite Sports Performance sector, Cooper has worked with athletes from the NFL, NCAA, PGA, and IBJJF. In the Tactical sector, Cooper has prepared athletes for Special Forces Assessment and Selection, Ranger School, Sapper School, Scout Sniper Course, and the Advanced Infantry Course. More recently, Cooper worked with a high school football and lacrosse team. He trains athletes remotely while he works for BridgeAthletic, where he runs their education and community programs.