Stamina and metabolic rate

I just updated to the latest experimental build and underneath where it shows the heat and sound in the “stats” side of the screen, there is now listed in white letters Stamina recovery and metabolic rate. Is this new? I dont remember it being there before? Is it something I did to make it appear and if so, how?
EDIT:Also when I go to drop nails, its giving me a message saying Items ordered to Drop. Drop 180 nails (180) for 120 moves. What is all this stuff?
EDIT:Ok well Im not sure what I did, but I closed the game and re-loaded it, and it all seems back to normal.

You enabled something called debug mode, which prints extra information for debugging purposes.