Why would you suspect that rheumatism is a possible side effect?
When I was a child, very cold showers were the latest fashion in my country, doctors recomended them for everyone, especially for children, to develop tolerance to cold weather. Luckily, my parents resisted. A few years later, doctors stopped recommending it, and just pretended the whole thing never happened. -- Later I heard from a doctor that the recommendation was followed by a visible increase of rheumatism, including small children, so they realized it was not that good idea.
Apparently, the people giving health advice at internet yet have to learn.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.