Answer:
I had this same question. It only asks for three.
QUESTION: Why do concussions happen?
ANECDOTE: Bob is in a bad car accident. His head snaps forward and back. Inside, his brain twists and bangs against his skull.
FACT: Concussions are more serious than you might think. In fact, they are caused by your brain twisting and banging against your skull, causing major brain damage.
Please answer my most recent question.