Summary: Many coffee drinkers roll out of bed and get their daily dose of java as soon as possible. Because of the way coffee affects our bodies, though, there may be more ideal times to drink it. Neuroscience PhD student Steven Miller explains that in the mornings (between the hours of 8 am and 9 am) our cortisol levels are at their highest. Cortisol isn't just the "stress hormone"—it's also correlated with our alertness levels.
