Im skeptical of these tapes/ cd's that you can buy which you play as you go to sleep, that claim you can learn things in your sleep.
The reason why im skeptical, is that when i sleep i can not hear and i was of the understanding when your go into a deep sleep your brain shuts down parts of the body not needed during sleep , like limbs, hearing ..
In the past when i have woke suddenly i have been shocked to find im completetly deaf- to which i was told was a normal thing when your woke up very suddenly
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