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A Good Sleep Helps You Become Smarter


This is an older article that may not reflect Dr. Mercola’s current view on this topic. Use our search engine to find Dr. Mercola’s latest position on any health topic.

The latest research suggests that while you are asleep, your brain is busily processing the day’s information. It combs through recently formed memories, stabilizing, copying, filing, and making them more useful for the next day.

A night of sleep can make memories resistant to interference from other information and allow you to recall them more effectively. It also lets your brain sift through newly formed memories, possibly even identifying what is worth keeping and what to let go of.


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