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Cramps Relief is a subcategory of dietary supplements that help prevent and treat acute muscle spasms and painful muscle contractions. In most cases, muscle spasms appear after intensive training during which all-important electrolytes have been washed out of the body and therefore the body and muscles are weakened. Convulsions are largely caused by a lack of magnesium which plays an important role in the body in controlling nerve and muscle communication. Another mineral effective in the fight against muscle aches is potassium. It helps transmit signals from the brain to the muscles, and thus stimulates their contractions. When blood potassium levels are low, your brain cannot transmit these signals so effectively. This leads to longer and more painful withdrawals that cause muscle spasms. Be cautious and don't let your muscles suffer.