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"The infographic above shows caffeine concentration: it reflects the amount of caffeine per ounce - you can use these numbers to determine how much caffeine you're consuming. Simply multiply the milligrams per ounce (in the graphic) by the ounces in a beverage."

"And you thought Red Bull was bad. It turns out that while a can of the energy drink has 80 milligrams of caffeine, a small cup of Starbucks drip coffee has more than three times that amount. Since many beverages don't show their caffeine content, it can be tough to make sure you're not overdoing it - and the Mayo Clinic advises adults to limit their caffeine intake to 400 mg per day. More than that and you run the risk of unpleasant side effects ranging from migraine headaches to irritability, upset stomach, and even muscle tremors"

"When you need a quick pick-me-up, how much bang for your buck will you get at Starbucks? Chances are you probably order one of a handful of drinks and stick to that group on a regular basis. However, this in-depth chart from Thrillist might help you try something new if you're looking to juice up on the cheap."

"Tell me if this sounds familiar: Your alarm goes off at 7:00 am. It's a school day. It's time to get out of bed and get ready to make that early morning bell. But in that moment, you feel as though there is no force on the planet that could make you open your eyes and surrender your comfortable position under the covers. Your mom comes into the room, already dressed for work. "You know," she says, "you wouldn't be so tired if you'd just gone to bed a little earlier." Is she right? Also, why isn't she ever tired in the morning? Most teens would agree that they're much sleepier in the morning than their parents are. There's a single molecule that's largely responsible for this difference. And no, it's not caffeine - it's melatonin!"

"Let's get one thing straight here. I love my morning cup of joe. I'm not alone in saying my day doesn't start without it. Sixty percent of American coffee drinkers claim they need coffee to start their day. But when I came across an infographic by Ryoko Iwata, a Japanese coffee-lover with a blog titled "I Love Coffee" who followed research on the 24-hour circadian clock gathered by Steven Miller, a PhD candidate at the Uniformed Services University of Health Sciences in Bethesada, I decided to change my ways. The infographic shows the early morning hours are the worst time to drink coffee."