Yes, you can learn German while you sleep. Researchers from many Universities tested the sleeping learning method to know if it could be possible the learning of words from foreign languages by exposing people to the words during the sleep period.
Listen and repetition on a REM and non-REM period. The Start-Up method
How to learn German quick and easy? Try learning German while you sleep. This video features the most important basic German words and phrases that teach grammar automatically. They are especially useful for the beginning student of this popular Germanic Language.
If you’re looking to learn a new language fast or make your brain learn faster, chances are you’ve fantasized about learning in your sleep.
Audio both in English and German is featured on this video. To use it to learn German language, just play the video before sleeping and leave the German words to flow in your mind. If you want to really learn German, the best way is to listen and speak the most common German phrases as often and as accurately as possible. If you really want to learn German well, this videos could be helpful for you to do that.
And doing it in a relaxed way is even better!!!
How To (Really) Learn A Foreign Language While You Sleep – https://www.forbes.com/sites/daviddisalvo/2014/07/28/how-to-really-learn-a-foreign-language-while-you-sleep/#776cd46331be
Straight Talk Meets Pillow Talk: The Guide to Learning a Language While You Sleep – https://www.fluentu.com/blog/learn-language-while-you-sleep/
Learning while sleeping – DW German Language – http://www.dw.com/en/learning-while-sleeping/av-38247546