Restless leg syndrome (RLS) is a form of insomnia characterized by an overwhelming urge to move the legs when they are at rest, especially during sleep. RLS affects about 10% of the people in the U.S. It runs in families and may have a genetic component. Recent research has found that people with restless leg syndrome are deficient in the mineral magnesium.
There's a link somewhere between this and Vitamin D anc Calcium.
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