Have you ever wondered why we sleep? Scientists don’t know the exact reason, but they have a few ideas. Sleep helps reset our bodies and minds. While we’re awake, our brain cells produce chemicals that build up and make us feel tired. When we sleep, our body clears these chemicals away. Sleep also gives our body time to heal and repair itself. That’s why people tend to sleep more when they’re sick  — it helps them recover. Sleep is also important for learning. When we take in new information, our brain forms new connections. These connections seem to strengthen while we sleep, helping us remember what we’ve learned. That’s why people who don’t get enough sleep often have trouble remembering things. So, while scientists may not know all the answers, it’s clear that getting enough sleep helps us feel refreshed, stay sharp, and be ready for a new day.