How Concussions happen.

This article is about how concussion happen. Our brains are pretty much Jell-O. Our brain is surrounded by fluid.  When you have a concussion your brain swells. Then your brain keeps swelling and then the brain swells so much that the brain pushes against the skull and damages your brain. When you get more then one concussion you start to get memory loss, dementia, and depression. The concussion is sometimes temporarily. Then when the cells stretch it allows toxic stuff into the brain cells then it kills the brain cells.