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What Your Dreams Mean And Other Things You Should Know

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Dreams are the strangest part of our everyday lives: everyone has them, we often can't explain them, and researchers still struggle to understand them. But what we do know about dreams is quite surprising. Here are 15 facts about your dreams - and your nightmares:

1. Why do we forget them so quickly?

It's still not clear, but one theory is that your brain doesn't want to confuse your dreams with real memories. Dreams happen during Rapid Eye Movement (REM) sleep, where your body is paralyzed so you don't hurt yourself (more on that later). The mechanics of REM sleep may also turn off the part of your brain that makes memories.

That may explain why dreams seem vivid when we wake up, but are completely forgotten in just 10 minutes. That short window is the space when your mind is shifting from REM sleep to full wakefulness. Also: our brains just have a hard time remembering things that happen once, and our dreams are often unique and very short.

2. Everyone dreams (probably)

To this day there are people who insist that they rarely or never have dreams, but researchers say they're probably wrong. While 32% of people report dreaming less than once a month, scientists have recorded these "non-dreamers" while they sleep and have proved them wrong.

Most of them were seen acting out dreams, or had dream-like brain patterns recorded. Of course, they simply forget their dreams when they woke up and claimed they didn't have any.

3. Sweet dreams vs. nightmares

Regardless of how often you dream, sweet dreams tend to be more common than nightmares. People who get a good night's rest usually dream more and have a higher percentage of good dreams. In a 2004 survey, 65% of people who sleep well said they usually have happy dreams, compared to just 57% of people who say they could use more sleep.

4. Sleep paralysis

This rare but frightening condition happens when the REM sleep that causes our dreams goes haywire. REM normally occurs in the middle of the night when you're fully asleep, but some people experience it as they wake up.

A representation of a sleep paralysis shadow.Sleep Paralysis World

As if waking up paralyzed wasn't scary enough, many people who suffer from sleep paralysis report seeing shadowy figures and other nightmarish sights when they wake up. This could be because the amygdala, which registers the "fight or flight" response in your brain, is more reactive during sleep paralysis episodes.

5. Precognitive dreams

Many people report dreaming about important events before they happen. Some call this deja vu, but it's also known as a precognitive dream. Throughout history, people have shared claims that they dreamed about disasters like 9/11 or the sinking of the Titanic before they happened.

Dozens of people claimed to predict the Titanic's sinking in their dreams.Special

But experts chalk these claims up to coincidences, or our faulty memories drawing connections that don't exist. When famous pilot Charles Lindbergh's son was kidnapped, a pair of psychologists asked the public to mail in any dreams they had about the boy's whereabouts.

Charles Lindbergh Jr.Daily Mail

Of the 1,300 letters they received, only a dozen correctly guessed that the boy was dead, and just 4 could accurately describe that he was buried among some trees. Take that as either dumb luck or a sign of some paranormal insight.

6. Lucid dreaming

Some people describe dreams that are almost like a video game: instead of feeling helpless, the dreamer can control what they do, where they go and even who they see. So-called "lucid dreamers" have even provided advice for the rest of us on how to achieve these fun, playful dreams.

They recommend keeping a dream journal, to recognize what you normally dream about. Also, repeat "I am aware that I am dreaming" as you go to bed. It also helps to wake up without an alarm, so your dreams won't be interrupted. Waking up in the middle of the night before going back to bed can also trigger lucid dreams.

7. Dreamcatchers

There's a rumor that these decorations are a modern invention, but that's not true. Many Native American tribes used them, usually by hanging them over a baby's cradle. They were called asabikeshiinh or "spiderweb" by the Ojibwe.

The legends say that the Spider Woman was a protector of children, who would save them from bad dreams. To protect their grandchildren, grandmothers would weave Dreamcatchers for the Spider Woman to rest on, and to trap bad dreams or spirits.

It turns out there are some common nightmares with hidden meanings...

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