Whether you’re gearing up to seize the day, power through an afternoon slump, or hit the gym, caffeine is a time-tested source of energy. According to a 2012 report from the FDA, caffeine is the most common psychoactive substance in the world. (Worried what a psychoactive substance is? It’s the scientific term for any substance that affects the mind–even if only slightly.)
Don’t get us wrong: sometimes coffee is the answer, and we can’t deny its health benefits when used in moderation. Unfortunately, when used excessively, caffeine is associated with unpleasant side effects, including heart palpitations, insomnia, and indigestion. While there is no shortage of caffeinated drinks promising to amp up your energy and increase your focus, you should know that there are alternatives available.
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