I believe we sleep because of the Brain plasticity theory. When we sleep, our brain repairs what needs to be fixed and is just a break from everything. When we sleep, this could help young kids brains' develop. A study also shows that sleep or sleep deprivation can help us learn and perform tasks. When we sleep, it's the chance for the brain to get a break. Once we wake up, it is ready to go and some problems may be fixed. So, I believe the brain plasticity theory is why we sleep.

I do believe that ghosts are real. One reason that this can be, is just because ghosts don't exist, doesn't mean that they are not real. It's just like a magician when he makes an object disappear. That doesn't mean it's gone, we just can't see it. Another reason is there are multiple stories and there are thousands and thousands of photos with things that seem ghostly in them. People have said, if you don't believe in ghosts, you don't believe in angles. So again, I believe ghosts are real.