From Healthyaeon

If you often have trouble falling asleep at night because no matter how much you toss and turn or what position you try you just cannot seem to get comfortable, you may have restless legs syndrome (RLS). According to the Mayo Clinic, every year more than 3 million people in America are diagnosed with restless leg syndrome, which has no cure. Those who suffer from it experience different symptoms and degrees of RLS but most describe it as a very unpleasant and overwhelming urge to move their legs. Waking up in the middle of the night with painful leg cramps is also commonly reported and while the disorder mainly shows up in the legs, it can affect the head, arms, torso, and other parts of the body as well…. read more here