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22:17

Astral
  
These occur when a muscle in the limbs     or abdomen contracts with great intensity and does not relax. These     are often caused by exposure to heat. Cramps can occur during     exercise, immediately after, or as long as six hours later. Yet     common as they are and terrible as they can be, no one really     understands cramps. They are a medical mystery.
 
 
 
  
 
 
 
  
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