A recent study highlights the mental benefits of dreaming.

While it is believed that sleep is among the best aides for a good memory, new research conducted by Erin Wamsley of Harvard Medical School shows that dreaming while sleeping can improve our memories even further.

Discover Magazine has more details on the findings of her experiment:

She asked 99 volunteers to learn the layout of a complex virtual maze so that they could reach a specific landmark after being dropped at a random starting point. Five hours later, they were tested again. Those who had stayed awake in the intervening time beat their previous times by 26 seconds, but those who had had a 90-minute nap improved by a whopping 188 seconds.

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