Drinking green tea with L-theanine can cause calm alertness because the caffeine in the tea wakes you up, while L-theanine promotes relaxation.

Caffeine has a well-documented effect on alertness and focus, though too much of it can cause jitteriness and anxiety. That's ...

Despite the common belief that chocolate makes you hyper, the truth lies in its caffeine content — and it’s probably not as ...

Chewing gum that wakes you up sounds like something from a science fiction movie, but the technology has been around for ...

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 ...

I tried Asda, Lidl, Aldi, Morrisons and Tesco own brand cola drinks to see how they compared to original Coca-Cola ...

One gives a quick kick, the other a calm lift but when it comes to lasting energy without crashes, coffee and matcha work ...

In a coffee culture that has grown more elaborate and meticulous, this is next level. World-champion baristas prepare drinks with the banter of a friendly bartender.

Pre-workout gummies provide a convenient alternative to powders, delivering energy and focus without the fuss of mixing or ...

Kristie Reed, PharmD, oversees emergency, general medical, surgical, psychiatric care, and oncology medication as the pharmacy director of a community hospital. Dr. Reed specializes in IV medications.

Three years ago, Justin Zheng, an entrepreneur in San Francisco, lay groggy in bed while a group of venture capitalists twiddled their thumbs waiting for him. “I completely forgot this meeting was ...

So many rely on coffee to power up each day, sometimes long before they eat breakfast. But if you are trying to maximize the boost you get from your cup of Joe, is there a best time to drink coffee to ...