Such a lovely dream! Do you find your Spanish is easier to tap in dreams than when you are awake?

I sometimes dream in French or mostly in French, but because French comes very easily to me, I don't notice much difference.

But I also sometimes dream in Russian, which is quite a different story.

I was once very fluent in Russian, but I hadn't spoken or read much Russian in decades until about a year ago after Russia invaded Ukraine. I started participating in minor bits of resistance by joining in online communities of russophones who were using social media (like Google restaurant reviews, etc, that the Russian government has not censored) to spread truthful news about the war to Russians in Russia.

That encouraged me to brush up on my skills, so I started reading Russian and watching a bit of Russian media.

I haven't been systematic about it, so the language hasn't exactly come rushing back to me, except in my dreams.

When I dream in Russian, which started again last year, I speak and understand words that I do not seem to have easy access to when I'm awake. Though sometimes, when I remember my dreams, I remember a Russian word or two, and they become cemented in my active vocabulary again.

This brings to mind that some researchers theorize that dreams have the basic function of cementing memory, with additional functions that have evolved over time.

I wonder if this is true?