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Speaker 1: Welcome to brain Stuff from house stuffworks dot com where

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Speaker 1: smart happens. Hi Marshall Brain. Have you ever gotten up

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Speaker 1: from your chair or woken up in the middle of

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Speaker 1: the night and discovered that one of your arms or

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Speaker 1: legs is falling completely asleep? What causes that? Most of

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Speaker 1: the time when something falls asleep, it happens because your

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Speaker 1: position squeezes some nerves. The pressure causes the nerves to

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Speaker 1: stop sending signals, so your brain can't control any of

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Speaker 1: the muscles, and you also can't feel a thing. Once

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Speaker 1: you remove the pressure, you don't regain feeling right away.

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Speaker 1: There's a certain amount of readjustment time before the nerves

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Speaker 1: can transmit impulses correctly. Again, some nerve cells don't transmit

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Speaker 1: any information, and others start sending impulses erratically. This causes

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Speaker 1: that strange tingling sensation. Motor control fivers are thinner than

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Speaker 1: the ones carrying touch information, so you can often move

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Speaker 1: the body part before you've regained complete feeling in it.

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Speaker 1: If you'd like to learn more about this and thousands

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Speaker 1: of other topics, come to how Stuff works dot com.

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Speaker 1: Be sure to check out our new video podcast, Stuff

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Speaker 1: from the Future. Join how Stuff work staff as we

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Speaker 1: explore the most promising and perplexing possibilities of tomorrow. The

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