Talk:Arenas/@comment-27915248-20160304180638/@comment-10955477-20160304220242

I believe that, when you have dropped to the Trophy range for the Arena below, you are in the Arena. However, as you face players ABOVE the lower trophy range of said Arena, you visit the Arena above and battle in that Arena.

The most efficient way of dropping to a lower Arena is simply, just to drop Trophies until you reach the Arena, regardless of your Trophy count :)