When will you get muscle cramps and why?

Muscle cramps may occur during exercise, at rest, or at night, depending upon the exact cause. Dehydration is a common cause of muscle cramps. Numerous medicines can cause muscle cramps. Most muscle cramps can be stopped if the muscle can be stretched.

Overuse of a muscle, dehydration, muscle strain or simply holding a position for a prolonged period can cause a muscle cramp. In many cases, however, the cause isn't known. Although most muscle cramps are harmless, some may be related to an underlying medical condition, such as: Inadequate blood supply.

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