Day 3: Yesterday, my head ached all day. I was pretty cranky, too. That's fading, but today I just feel low, and tired, and honestly, like I want to crawl into bed and stay there the rest of the day.

I'm not a scientist, but my guess is that I was using sugar as a quick pick-me-up during the day, whenever my blood sugar or serotonin levels dropped. But beyond biology, there's something else going on here. I enjoyed sugar (a little too much, most days), and now it's gone. Luckily, I remember some advice I once got: If you're going to give something up you enjoy, whether it be sugar or cigarettes or whatever, replace it with something else that makes you happy.

In my case, exercise and a healthy diet will fix any blood sugar or serotonin issues I may be having. But I'm also taking time this week to indulge myself in other, non-food daily pleasures: a long walk with my dog, permission to sit down, reading a book instead of doing the dishes, and even a little shopping (but just a little!).