My productivity is generally measured in how much time I sit on the porcelain thinking throne first.
I never understood this. Is this why the cubicles are always full in the office? WTF I go in there take a dump and leave while the people on each side are just silent the whole time. I can think of much better places to think.
Truer words have never been spoken. That and planning out your day & thinking through problems in the shower.