Originally Posted by Newboy
Hey, I agree with every word of your note, indeed Sheldon is a wise man, for I have noted that as I become more tired the weight on the "tender zone" (wherever that may be) gets worse. I will read more of the thoughts of Sheldon and surely become a wiser person for it.
This is probably because as you fatigue, you are supporting less of your weight with your legs and arms and so the weight bears down more on the contact regions with the saddle.