Saw these nice graphics on Lifehacker today:
http://www.medicalbillingandcoding.org/sitting-kills/
Having gained 10 pounds since starting the doctorate, I'm working to reverse the damage! Thought these were a good reminder. I've been using an online stopwatch, setting it for various increments as a reminder to get up and walk around, go out for a short walk, do some simple exercises, etc. It's been helping my mental attitude and my writing . . . Took some experimentation, thought, to figure out the right time increments for me (25 minute pomodoros are too short for me: but three 60-minute cycles, with short breaks between and a longer break after seems to be helping. At least I've stopped gaining.
Passing this along in case it helps anyone else stay motivated!