A group of U.S. Army researchers developed a web-based tool that tells users when and how much caffeine they should consume to feel most alert during the day.
Is a 7 a.m. espresso your answer to springing into action, or would waiting until midmorning leave you more alert? Will an afternoon cup of coffee help you avoid that post-lunch slump, or will it keep you wired all night long?
The guesswork of exactly when and how much caffeine to consume to help ...
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