I live in Europe, had to get my permanent residence permit and for that - you have to pass the language exam. Boy, that was some experience!

I'm in my 40's so learning a new language has activated the brain muscles that were last active when I was... 4?

They were so rusty, slow and amost physically refused to cooperate at first. This was tough. Now looking back it was absolutely worth it, best brain workout ever. Best.