Learning a language while you sleep sounds like a dream, but it’s not as straightforward as it seems. While some studies suggest a potential link between sleep and memory consolidation, learning an entire language solely during sleep isn’t feasible. Language acquisition requires active engagement, practice, and comprehension—factors not achievable during unconscious hours. Yet, listening to language audio while sleeping might aid familiarity or reinforce what’s already learned, but it won’t substitute active learning efforts while awake.