The question about an "off day" came just after I'd experienced the same thing (though not on the same day, so we can't blame the stars or the weather). Yesterday I was locked into rigidity no matter what I did. Intake of food didn't seem to be a factor. I wondered about the pills themselves -- is it possible that Sinemet can deteriorate significantly if, for instance, exposed to heat in a car -- or to cold, for that matter? While I'm writing, on the matter of height, I and my two cousins with PD are all within the average range. Frances Armstrong [log in to unmask]