A System Admin Looking for Fitness Advice to Boost My Work

I work as a system administrator, and lately I’ve been wondering how building more physical strength and endurance might help me on the job. It’s not just about lifting servers though that happens but more about the long hours, the mental focus needed during outages, and just staying resilient day to day. For those of you who train with these goals, what kind of routines have you found translate well to a desk-heavy, yet sometimes physically demanding role? I’m curious if improving my own stamina has helped anyone else handle stress or long shifts better.