De bästa tiderna att dricka kaffe →

Enligt I Love Coffee, med illustrationer av The Oatmeal:

If you drink coffee at the same time that your cortisol levels are peaking, the effect of caffeine will be greatly diminished since you’re already experiencing a natural jolt. By consuming coffee when it is not needed your body will build a natural tolerance to it, and the buzz you get from it will greatly diminish.