Why does coffee make some people anxious but others focused?

Coffee has something in it called caffeine, which acts like a little helper for your brain. Some people feel more excited and maybe even a bit nervous when they drink coffee, while others feel calmer and more ready to work on their tasks.

Imagine your brain is like a group of kids at a playground. When you drink coffee, the caffeine is like a teacher who comes in and says, “Let’s all be more active!” Some kids get really excited and start running around, that’s like feeling anxious or jumpy. Others just smile and say, “Okay, let’s do our best,” and they feel focused and ready to learn, that’s like being calm and concentrated.

Just like some kids are more energetic than others, some brains react more strongly to caffeine. This means their body might send out a message saying, “Hey, I need to be ready for danger!” That makes them feel a bit nervous or even a little anxious. Other brains say, “Great! Let’s get things done,” and that helps them feel more focused.

So, coffee can act like a fun game, sometimes making you feel like you're on a rollercoaster, and other times helping you feel super calm and ready to play the best game ever.