Before college, I hardly consumed caffeine in any form. I'd have a cup of coffee here and there because I liked the way it tasted. But, as a freshman in college obsessed with getting good grades, I ...

This story was originally published on March 6, 2023, and has been updated. Caffeine is the most widely consumed psychoactive drug in the world. It's in coffee, chocolate, energy drinks, soda and tea.

If caffeine does not affect you it may be due to your genetics, lack of sleep, or increased tolerance. To boost your energy without caffeine, try exercising, going outside, or eating a healthy snack.

Caffeine sensitivity causes people to feel the effects of caffeine much more intensely. Symptoms of caffeine sensitivity include headaches, insomnia, anxiety, and jitters. Alternatives to caffeine are ...

Adam Taylor does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...