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That's y-a-k-U-L-T-C-O-J-P. When it comes to a guide for your gut, count on Yacolt.

This is Scientific American's 60-second science. I'm Christopher in Taguata.

Salvador Dali had a peculiar way of refreshing his mind, something he called slumber with a key.

In his 1948 book, 50 Secrets of Magic Craftsmanship, he described how it worked.

You must seat yourself in a bony armchair, preferably of Spanish style, he wrote.

In your left hand you were to clench a heavy key suspended above a plate.

Then he continued, you will have merely to let yourself be progressively invaded by a serene afternoon sleep,

like the spiritual drop of anisette of your soul rising in the cube of sugar of your body. As you drifted off,

the key would slip from your fingers and clang on the plate, awakening you. He claimed the

brief moments meant between wake and sleep would revive your physical and psychic being. And he

cautioned that, quote, a mere second is infinitely too long. Now, Dali's mystical soundingsounding method has been, to some degree, vindicated by science.

We show that the period between wake and sleep is actually very inspiring for creativity.

And napping with an object in hand might might help to taper into this creative sweet spot.

Delphine Udiett is a sleep researcher at the Paris Brain Institute.

Since childhood, she's found it easy to slip into that zone between wake and sleep.

I try to sleep with a problem in mind and then just let the images come to me.

And sometimes I have great ideas.

But she was curious to find out why. So she and a colleague asked 103 volunteers to complete

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