Caffeine is the most widely used stimulant in the world. For many of us, a cup of coffee or tea is almost as routine as breathing. It helps us wake up in the morning, beat the afternoon slump, and ...

Suddenly stopping caffeine can cause the brain to go into withdrawal. This happens because caffeine temporarily block receptors, and then when the caffeine is stopped, the brain releases too much of ...

It’s easy to judge when you spot someone cruising out of your local coffee shop with an extra-caffeinated beverage in hand. The Last of Us star Pedro Pascal knows this all too well. He raised eyebrows ...

From espresso to energy drinks to supplements, caffeine comes in many forms, Rula notes. And if you're like most people, you probably enjoy a cup of coffee each morning or a late-afternoon soda to ...

We all have our favorite caffeine vehicles—yours might be a thick, foamy espresso or a strong cup of Earl Gray tea, or chocolate. I like a good cup of black coffee made with a French press! One way or ...