I code a lot, often in focus for 4-6 hours at a time, and that causes back strain between my shoulder blades, an area a past chiropractor called the "mouse muscle" because it is the single muscle near the spine that holds the weight of your arm when manipulating a mouse and keyboard. Plus, due to neck strain from staring at screens, I typically need a neck adjustment to relieve base of neck stiffness.

Also, when you work out, do you protect your wrists? I make sure to use barbells with angle grips or vertical grips so my wrists are not bearing the weight; If to lift a weight my wrists are vertical, and not horizontal, the strain of the weight is bared by wrist bones and not tendons and muscles.

I also take a Lysine+b6 supplement, which seems to help recovery from strenuous workouts where the muscles may have been over stressed. Lysine is a protein used my connective tissue, like skin, cartilage, and tendons. I have no idea if the supplement is realistically a good idea, but it seems to help my recoveries. It's also related to stress management, and I manage a lot of stress.