I just realized something

When I'm tired, I feel much more sensitive emotionally and physically.  This is interesting because my emotions tie in with my physical feelings.  When I'm well-rested, I can deal with the pain of the palsied muscles much better.  When I'm tired, it's like every nerve ending is on fire looking for some water to put it out.  Then, the pain makes it so I cannot sleep.  Thus, it makes a vicious cycle.  But, as I get more and more tired, I, not only, feel the pain more intensely but then, my mind works its way through its many scenarios, regrets, and mental permutations.  I guess it's my way of telling myself to sleep.  Not like this is a groundbreaking realization, but, if I know why I feel a certain way, I can, at least, take steps to address it.