Researchers have discovered your morning coffee does more than wake you up: It also boosts your memory. 12 ounces, or about 200 mg of caffeine, seems to be the proper amount to enhance memory.
You can also get memory enhancing effects with as little as 100 mg but by 300 mg the effects start to reduce, so don't over do it.
The memory enhancement was only for information learned a day earlier, so while drinking coffee is great for exams, it probably won't help you recapture your childhood memories or what you did that weekend in Vegas.
This discovery was learned as part of a research project led by Daniel Borota at Johns Hopkins University and published in his article "Post-study caffeine administration enhances memory conslidation in humans" in the journal "Nature Neuroscience."
Borota also noted that it is not known if the enhancing effect works for long-term memory.