Neuroscience PhD student Steven Miller has the world listening to him as he explains that most people drink coffee at the wrong time. Yes, according to recent research, there is a correct time to drink coffee.
Usually people crawl out of beds in the morning and need a hot cuppa before they can function properly. But Steven says that in the mornings, out Cortisol levels are high and we are already at a high level of alertness. So the cuppa is not really required. In fact, he goes on to say that like any other drug, if caffeine is administered when not required (as we are alert) ten it can stop having the desired effect over a period of time.
Steven says that between 9:30 and 11:30 in the mornings is the best time to have your cup of coffee. This is the time when Cortisol levels are sagging and you could use a boost. Other times when Cortisol levels peak (and you should avoid the java) are between 12 and 1 PM and between 5:30 and 6:30 PM.