It’s simply a matter of common sense. When you drink coffee, you have to think about the things that will happen, invariably. You have to think of things that you will want to do while “you’re on the coffee.” And so the issue is timing. For instance, you’re not going to want to take a few cups of healthy coffee, no matter how healthy these cups of coffee are, just before you want to sleep, because well, that would just be stupid. Flat out stupid. And the thing is, when you do something like this, you’re really playing with the internal mechanisms about you and your body that help to keep things in check, and help to keep everything in order about your world, the world inside you. And so when people drink coffee, they’re usually “doing it wrong,” in that they’re taking that first cup in the morning, when they should be in the late morning.