Why do some people feel more awake and happy at night?

Some people feel more awake and happy at night because their brain is like a superhero that gets extra energy when it's time to sleep.

Imagine you're playing with your favorite toy, and suddenly it gets really bright in the room, maybe it’s nighttime, but there are still lights on. Your brain feels excited by all the changes around it, just like how you feel happy when something fun happens.

At night, when it's quiet and dark, some brains go on a special adventure inside the head. It’s like going to a party with friends, they laugh, talk, and have fun together. That makes them feel awake and happy, even though it’s nighttime.

Other people might feel sleepy because their brains are more like cats, who love to nap in the sun. So, while some brains are at a party, others are curled up on a soft pillow, both are having fun in different ways!