When you wake up and drink your morning cup of coffee, you don’t dwell on what it is about the brown beverage that wakes you up. You just know that it’s easier to go about your day after you’ve downed a few cups.

Of course, it’s the caffeine that’s hard at work, making your brain think you’re less tired than you really are.

Whether you’re looking out for your body or you just want a stronger effect, the question is, which coffee beverage has the highest caffeine content? The question is simple enough, though the answer is anything but.

Caffeine is a wild card

Energy drinks or other caffeinated beverages often have their caffeine content plainly listed or readily available with a quick search. Those numbers are pretty specific and accurate.