Test your muscles for predisposition to RSI
Over the course of various treatments, various (tens of) muscles were found to be particularly tight or short. An illustrative list is given below. As these muscles have reverted to near normalcy, the pain and numbness has resolved. The link between physically observable tightness of specific muscles and RSI is extremely clear (at least to me).
Test your muscles for tightness. If you find them to be tight, there is a very strong predisposition for you to get RSI.
1. Muscles of the forearm. This made it extremely difficult and painful to stretch one's arms perpendicular to the wrists. In particular, when kneeling down on one's hands, as in a crawling position, holding that position for more than a couple of minutes caused significant pain in the hands.
2. Triceps: This significantly reduced the range of motion at the elbows. It was difficult to fold the lower arm, e.g. as in touching one's shoulder with one's hands.
3. Numerous muscles around the shoulder (including chest and lats). This made it difficult to take the arm back behind one's body. It also caused enormous fatigue when arms were raised about the shoulders.
4. Muscles of the upper back and neck. This reduced the range of motion of the neck, particularly looking to the side and backwards.
5. Numerous muscles of upper thighs, abdomen, and lower back. This made it difficult to stretch and touch one's close when sitting on the ground. In fact, the range of motion at the hips was particularly poor.
Muscle shortening or tightening occurs through absence of a proper stretching regimen.
Regular yoga exercises – BEFORE you get RSI, can completely prevent RSI.