It doesn’t, really. It’s got “about as much caffeine as a cup of coffee”, as the adverts say, and an overdose of niacin so that you get a “niacin rush” which makes your pulse race and otherwise make you *feel like* you’ve had some Dexedrine or done a line of marching powder. It doesn’t have real stimulant properties. At least your typical energy drink has some water in it so it hydrates you…
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