Plus, when you'll start to notice them after your last fix.

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 ...

Caffeinated coffee and decaffeinated coffee each have advantages and disadvantages when it comes to energy, heart health, weight loss, mood, and sleep.

Can you get the same energy boost without caffeine in your cup? The answer may surprise you.

Caffeine is the most common, normalized stimulant in the world, with many people consuming caffeine daily. According to Ron Cotterel, M.D., M.S., a family medicine and integrative family physician, ...