Most of my productivity problems as a PhD student stem from two things. One is writer's block (it burns, it burns!) and the other is chemical (hypothyroidism, you suck!).
Today, it is neither.
Today, it is the fact that I can't feel my fingers.
Today, my office is like a refrigerator.
Today, it is warmer outside than in my broom closet.
This is causing two problems. My fingers want to live somewhere warmer than the keyboard, namely around a tea mug.
Solving problem one means that I spent a generous amount of time trekking up and down two flights of stairs going to the toilet.
Thankfully, this weather will pass.
Insert your own tea joke here. Sorry, delicates.