At some point a few years ago I decided to join a gym for the first time. While I improved my posture and BMI a good bit, I might be happiest with the elimination of RSI in my wrists and hands. It started out as something annoying in my 20s, and got very painful in my late 30s. Gyroscopes, powerballs, and other recovery devices never seemed to work.
What keeps me going 2-3 days per week, most weeks, is the knowledge that RSI will come back without lifting weights. At the onset of the pandemic I tried working out from home, and while better than nothing, it isn't comparable because of equipment selection.
If you have repetitive stress issues from being in front of a keyboard all day, try going to the gym and use the machines that work your arms and forearms. Keep going until you feel you feel the burn.
I'll be a gym member for life, or at least as long as I type into a keyboard regularly. Maybe that's zen for me--life without pain from regular keyboard usage.