Apparently my body doesn't have the "take the good with the bad, think about potential health benefits, consider all the good you are doing for the cause" attitude that my brain is occasionally able to trick itself into.

To the contrary, my body seems really, really angry.  From my toes (literally), to my palms, butt to back, elbows and everything between.  The legs have an  excuse: they are doing most of the work.