Rachel Densley, 22 and Alexander Ure, 23, make an early morning soda run at Brigham Young University.
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Early lecture halls are about to get supercharged.
Plus how much is too much caffeine per day.
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If you and the barista are on a first-name basis, welcome.
Don't think your drink is totally stimulant-free.
Lookin' at you, broccoli.
Is it really worth the wings?
Its effects may appear to be magical, but there’s a lot happening under the surface.
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Turns out the answer isn't what you probably think.
Some people just drink it.
Soz, brownies. It's me, not you.
Because we all want to know.