OK started my day with a protein shake and a spinning class... because I'm so busy at work I didn't track every morsel but had cheese for snacks, a few almonds, salad for lunch, and beans for dinner. Not bad, a big departure from typical days! I have a headache and have had one most of the day, probably my body going into sugar withdrawl. I took the dog for a short walk this evening after dinner.

The headache could be related to some dehydration, so be sure to drink plenty of fluids. If you're cutting down caffeine too fast it could be from that, too.