Si PoLR, fussiness, and hypochodria
It makes sense to me that the PoLR would be something that you have a difficult time controlling... it's always either too much or not enough. It's something that we are not naturally inclined to be reasonable about, one way or another.
People typically talk about a Si PoLR in terms of not taking care of one's physical health, not taking off work or visiting a doctor when they should, not giving consideration to asthetic qualities, etc. That would be the "not enough" end of it. What about the "too much" end of it? I could see someone who doesn't know how to properly moderate Si become overly concerned with possible health problems and discomfort.