“Playing that role is very hard on his body,” Murphy said in a call with Men’s Health discussing the John Wick workout regimen after shooting a video at HVY Industry. The key to the program was building up Reeves’ muscular endurance without overtaxing his body.

Murphy’s philosophy is to create the safest environment for his clients with high-benefit, low-risk exercise programming. “He wasn’t lifting crazy heavy weights—it was getting his body moving, getting his muscular endurance and stability—it was just a mindset,” Murphy said. “He would leave the gym exhausted, but feeling great. Where his body got beat up was in all those scenes [filming the movie].”