Sarah Carolides says being a fast or slow metabolizer affects how well your body handles caffeine and how much coffee you ...

Take a step back into the paws of the real laziness masters: cats. These adorable overlords have perfected the art of doing ...

The U.S. Food and Drug Administration (FDA) advises that most adults should limit their caffeine intake to 400 mg per day, ...

Studies show coffee can be beneficial, but researchers are unsure if it’s what’s in the caffeine or the coffee itself. A doctor explains what’s safe for most people.

These powders promise more energy, better pumps, and (possibly) improved performance—but they’re not all the same.

To caffeinate or not to caffeinate is an even bigger conundrum for guys on the PGA Tour looking to optimize performance. For ...