I would recommend this as well. Even if it's just to get the body to relax a little. However, it's one of those things that only works with an open mind. "A let's see what happens" approach is better than a negative one of disbelief. Visualization of moving energy around is key to get everything flowing. If he can't or doesn't want to do that much then there will be no results. It would be like riding with the brakes on.Meditation or maybe some qi gong work...
I'm not saying that it's going to cure anything, but it may create enough changes that will allow the medicine to work better.