When you enjoy a caffeinated drink such as coffee, tea, energy drinks, or cola, it does something interesting in your brain. It blocks a sleepy signal called adenosine. Adenosine makes your body feel tired, but caffeine helps you stay awake and alert. This can make you feel happier and more energetic. But, caffeine works differently for everyone. For example, having a morning coffee might make one person feel more awake, but not for another.

Having a little caffeine can make your mood better, but having too much might be a problem. Some people might feel jittery, and it could make it hard to sleep. We should watch how our body feels with caffeine, so we find the right amount. Everyone is unique, so what’s good for one person might not be good for another.