So... though my stomach is rumbling a little bit, I have a surprising amount of energy. I feel spry and jumpy (in a good way) and I just feel a swell of enthusiasm. I'm overcome with the desire to get up and do things - small things, big things...
I'm starting to just accept, and attempt to work around, the fact that I really just can't program or concentrate in a single sitting for more than about an hour at a time. I need to get up and walk around, do something else with my brain for a little bit. I don't feel like this will negatively affect my performance at work too much, though, because my need to click on random, meaningless internet crap is significantly diminished.
Plus - and, again, I know this is a temporary thing and not the focus of this endeavor, but... I lost another three pounds since yesterday, and the difference those pounds is palpable. My clothes feel almost loose - my shirt that was too tight is draped falling straight down, and I just generally feel 'light'.
I love this so far. I'm preparing myself for the mental challenge of it - mostly by acknowledging that it definitely will be a mental challenge - but so far, it's easier to do this than not to do it.