Mouth guard, good or cope method?

[abdo 1569]

They say it can help with ccw rotation through soft tissue and possibly the bones as well? , one of my friends is getting it soon but I think it's a bit cope

 

[25 m-a-x]

They say it can help with ccw rotation through soft tissue and possibly the bones as well? , one of my friends is getting it soon but I think it's a bit cope

only works if your under 15 basically