I'm the same and as someone who's worked remotely for 10 years, my life was way too sedentary. I got a dog which helped as the guilt of not walking her is plenty of motivation to get out daily, but whilst it helps, it wasn't exactly making me fit and healthy, just a bit LESS unhealthy.
I discovered rock climbing 3 months ago though and my life is completely changed, all exercise and diet is done with my current project route in mind and after 3 months I'm already far healthier and stronger than I've ever been before.
Phenomenal sport, as someone who HATES the gym I really recommend everyone tries it at least once. It's as intense as any workout and 100x more fun.