If you're feeling anxious and having trouble sleeping, you may be taking in too much caffeine, or you may be a slow metabolizer.

That morning coffee ritual might be doing more than just waking you up — it could be secretly amplifying your anxiety levels. For young adults navigating the pressures of career development, ...

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

Ever feel like you’ve had one cup too many? Of coffee, that is. Or, honestly, the first cup might already feel like overkill for your nervous system and stress levels. If you've started to question ...

Some people can’t enjoy caffeine without experiencing negative side effects. Learn about caffeine sensitivity risk factors, plus buzzy alternatives to consider.

For some, the day doesn’t begin until the first cup of coffee. But for others, that ritual—famous for bringing focus and energy—can cause a racing heart, jittery hands, and a vague sense of dread that ...

Caffeine helps us wake up and stay alert, but too much can be harmful to our health. Some coffee drinks at Starbucks contain almost the daily limit for caffeine in one cup. Starbucks also has drinks ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Ever feel like you’ve had one cup too many? Of coffee, that is. Or, honestly, the first cup might already ...