Anna raised her hand to reply. "Muggles can't benefit from the use of magic the way we can. Their safety pretty much relies on their own precautions. Muggles need to know self-defense in order to be able to properly defend themselves when danger arises. They can use their defense strategies to stay safe if someone tries to attack them. There are also self-defense strategies they can use when dealing when dangers not caused by humans, such as forces of nature," she said.