Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

A filled favorite white coffee mug
A filled favorite white coffee mug

    JUST WATCHED

    What you should know about caffeine

MUST WATCH

What you should know about caffeine

CNN's Chief Medical Correspondent Dr. Sanjay Gupta explains what you should know about caffeine.

What you should know about caffeine

CNN's Chief Medical Correspondent Dr. Sanjay Gupta explains what you should know about caffeine.