Find yourself tossing and turning at night? Pacing when you should be sleeping? You might want to keep an eye on your Restless Leg Syndrome (RLS). Research out of South Korea suggests that there may be a link between RLS and an increased risk of developing Parkinson's disease later in life. The study, published in the journal JAMA Network Open , also found that treatment with certain drugs might slow the progression to Parkinson's. RLS, a movement disorder causing discomfort in the legs,