If you swear by knocking back a cup of coffee before that big meeting, presentation, or study session, you could be drinking it all wrong. Swallowing a couple hundred milligrams of caffeine after studying was enough to boost memory retention by 12 percent the following day, according to a study from Johns Hopkins University and the University of California, Irvine.
It's possible caffeine raises your brain's levels of the chemical norepinephrine, which prior research has linked to enhanced memory storage, explains study coauthor Michael Yassa, Ph.D. Caffeine could also, or alternatively, have some direct effect on your brain's hippocampus--a region involved with long-term memory encoding and storage, Yassa adds.
Stick to about 200 milligrams of caffeine after the important event. That's roughly the amount of caffeine in 12 ounces of brewed coffee or 30 ounces of caffeinated tea, according to the Mayo Clinic. And know this: You can drink your coffee or tea anytime in the hour before you finish the task you need to remember. Caffeine takes about an hour to reach peak levels in your system. As long as that peak period overlaps with the conclusion of your studying, you're good, Yassa adds.
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