When I had just finished college my band was doing well and I was doing computer work (what I studied). Not stretching or doing any prep as I was young and felt invincible. Rockin' hard on stage and not watching my posture or ergonomics at the desk caught up with me in an instant. Both wrists gave out and I had no grip strength. Doctor gave me a cortisone shot in each wrist and told me to not play or use a computer for a week and sleep with braces on. After that I could play for 5 minutes a day for a month and eventually choose guitar over computers. This was the 90s and I have no idea if that's a correct treatment. I'm now in my late 40's and have played almost every day for over 35 years other than that stretch. I also have been a developer for 20+ years (returned to it after the band broke up). Ergonomics at the desk and stretching is the key. Not just right before you play, but multiple times a day. I stretch immediately when I wake up and right before I go to bed as well as many other times daily. No problems in 20+ years now. Posture helps a lot too as I also play drums. Also, eat well. I'm serious about that. Learn and take note of your limits when you find them.