After living caffeine-free for a few weeks, I've gone back to one cup of coffee in the morning. That little spike of energy is just too good to pass up. Without it, I find myself unable to write or focus early in the morning. Apparently, the activation energy required for blogging is slightly higher than my normal, uncaffeinated levels. I'm still drinking a lot less than I used to and I really feel better because of it, so the experiment wasn't a total waste.