Is there any side effects, or something about it I should be concerned about? I noticed I've become addicted to caffeine (which is bad, I know.) and most of the time I drink Energy Drinks (A majority of the time it's Rockstar) and I've been reading some information about it, but I haven't got some things clarified.
What does it have to do with digestion?
and also,
Can it have negative effects?
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