Primarily delivered through beverages like coffee, tea, and soda, caffeine is by far the world's most-consumed psychoactive substance. Caffeine is chemically similar enough adenosine—a substance we generate naturally over the course of the day inside our bodies—that it temporarily blocks our adenosine-receptors.
Caffeine Withdrawal
Caffeine Withdrawal
Caffeine Withdrawal
Primarily delivered through beverages like coffee, tea, and soda, caffeine is by far the world's most-consumed psychoactive substance. Caffeine is chemically similar enough adenosine—a substance we generate naturally over the course of the day inside our bodies—that it temporarily blocks our adenosine-receptors.