COURSERA : LEARN HOW TO LEARN. SLEEP FLUSHES OUT TOXINS FROM OUR BRAINS
Do you know that just by being awake creates toxic products in your brains? When you sleep, your brain cells shrink and create passages for the toxics to wash themselves out. During sleep, the brains tidies and organises the information, ideas and concepts. It erases the less important parts of memory and strengthens the more important parts. The brains go over and over the neural patterns to strengthen them. This is the diffused mode. Dreaming about what you are studying can enhance your learning process.