No expert here, but after I started working a desk job and had to type over 4-5 hours daily, i started to feel that my tendons would "pulls" and being really "tight" in general, and was really concerned, and did basic stretching every 15 minutes, which provided short term relief. (mostly feeling it at the ring finger all the way down to the inner elbow joint (when palm up).
After a year or so of it worsening, (and due to entirely unrelated reasons), I started doing weight lifting again, and the situation have improved a lot. I still feel strains and pull after long sessions of typing, but not consistently like before on a daily basis. During my worse times, it would hurt every time I type.
Perhaps its a good stretching routine that goes with weight training.