You have to be more specific than 'exercise' for this type of injury. Biking (as sibling comment points out) does not put you in a very ergonomic position, and

You have to be more specific than 'exercise' for this type of injury. Biking (as sibling comment points out) does not put you in a very ergonomic position, and is primarily cardio. Biking is simply not going to improve things, and may make it worse. What I've learned in the past two years of intense PT is the most important thing is to focus on fixing muscle imbalance through strengthening (specifically, avoiding upper crossed and lower crossed syndromes). These put the body in a better position and reduce the load on neck muscles, which in turn reduce referred pain and muscle tightness into the arms and wrists. Most RSI-like symptoms are actually problems starting in the neck. Having a well-balanced body that is durable is an amazing protector against all sorts of poor physical environments. The article alludes to this by saying 'improve your posture', but that's not very specific - posture improves when you have better balance between muscle groups. Of course, improving ergonomics, body mindfulness, getting adequate rest, temperature, etc are important as well, but those alone don't do it, nor does cardio.