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December 4, 2011
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What science knows about muscle cramps

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It comes out of nowhere - while you're playing tennis, gardening, sitting on the couch or even when you're fast asleep.

Suddenly a muscle gets locked in spasm, it's hard as a rock, and the pain borders on unbearable.

Muscle cramps usually target your legs and can last for a few seconds to 15 minutes or more.

Yet as common as cramps can be, experts don't know exactly what causes most cases.

And there's no solid science on how to best treat them. Here's what we do know:

They're common in summer

That's because when you exert yourself in …

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The Nevada Appeal Updated Dec 4, 2011 03:01AM Published Dec 4, 2011 03:01AM Copyright 2011 The Nevada Appeal. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.