| http://www.w3.org/ns/prov#value | - They include:Poor blood circulation in the legsOverexertion of the calf muscles while exercisingInsufficient stretching before exercise Exercising in the heatMuscle fatigue Dehydration Magnesium and/or potassium deficiency Calcium deficiencyMalfunctioning nerves, which could be caused by a problem such as a spinal cord injury or pinched nerve in the neck or backa side effect of medicationTreatment
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