I can't believe how much better I feel. After a week of barely managing to walk slowly for 30 mins each day, this afternoon (after choc-chip cookies!) I did an hour of vigorous dancing; and what is more, I really enjoyed it! And I would have done more except I ran out of time before dinner!
The Whole30 talks about getting "tiger blood" (ie lots of energy and feeling great) after two or three weeks of their program, well I got it from eating a little bit of sugar/grains/caffeine.
I know this doesn't mean I will thrive on junk food, but it does mean I feel much better eating a normal balanced diet with all the food groups instead of depriving myself and obsessing every second about food.