I am definitely stout...and somewhat muscular (nowadays buried under all the flubber)...but I've always been a slow twitcher (endurance over speed). My cadence has always been embarrassingly slow, even when I was in good shape.

When I got my cyclometer, I purposely avoided any that had a cadence measure...I felt like it would force me to directly confront my slowness.

Thank you, bounceswoosh (your screen name makes me smile, btw) for posting this question 'cause I will definitely put to use the good advice being given here.