Actually if you want to get technical there are a lot of research that show training your brain and reflexes in other but similar disciplines yields better results as it stimulates the brain.
I recently read an article about a longbow archer who tried to improve his accuracy, he found that other forms of trajectory training helped his brain adapt and stimulated measurable neural growth/activity. He threw all sorts of things, darts, knives, rocks etc. and even used his wrong hand. Although he initially regressed slightly he soon surpassed his best ever results.
It's a bit like improving the software for the program that executes that function in your brain. It's too easy to plateau on one sport/activity, you need to keep the brain challenged and it adapts.
Now, I have no idea if any of this nonsense applies to RC or not but I have totally convinced myself that it does and it's entirely the excuse I used with the wife for buying yet another car so I won't be told otherwise
