@grandma- Good morning! RLS, restless leg syndrome is a nerve condition of unknown cause. There is an uncontrollable urge to move your legs (in my case) and moving them helps to lessen the urge, much like trying to loosen an elastic band because it pinches. As soon as you loosen the band the pinching stops but it's back as soon as you release it. Trying to get comfortable is almost impossible. There are meds for it, like requip but it doesn't always work for me. It's just another annoyance but I don't know if it's related to arthritis.