Here are a few of the things I do to counteract my desk job. I live in Denver.
-Workout before work (5 days a week, switching programs/routines every 1-3 months)
-Bike to work
-Standing desk with balance board
-Lacrosse ball and theraband at my desk for stretching
-Eat well, mostly Paleo, but not super strict. No soda.
-Intermittent fasting (~8pm to 12pm)
-"Fun" exercise after work(skateboarding, basketball, yoga)
-Work from home 1-2 days a week and move around as much as possible those days.
I've found this works for me but ymmv. I've also been active most of my life.