Why do you think chewing is healthy at all? It allows organic matter to get into your teeth and physically wears them down. This is a hard question to google, b

Why do you think chewing is healthy at all? It allows organic matter to get into your teeth and physically wears them down. This is a hard question to google, because you get chewing tobacco and gum chewing results, but can you provide any evidence that chewing on its own is somehow healthy? What mechanism do you think it hits?