Around 80% of adults worldwide consume caffeinated beverages, and the use of such stimulating substances dates far back in ...

Caffeine drinkers told researchers from the University of Warwick and Bielefeld University in Germany that a cup of coffee or ...

The research showed that tiredness and social setting also change how caffeine feels. When people were more tired than usual, ...

Caffeine consumption is linked to increased positive mood in daily life, especially within 2.5 hours after waking. This effect is influenced by tiredness and social context, with no consistent ...

A large real-world study of 236 young adults found that caffeine significantly boosts positive emotions, particularly in the morning.