Short bursts of twitching in an eyelid happen to nearly everyone, and they may indicate a need for more magnesium. The trace mineral facilitates nerve connectivity, and a lack causes distorted nerve connections, resulting in twitches. Numbness, tingling, and cramping are most frequently experienced in the limbs but can affect any part of the body. Some people with magnesium deficiencies begin noticing these symptoms after exercise or exertion. If the deficiency worsens over time, tingling or cramping may occur during inactivity as well, including while asleep.

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