Good evening--my name is Mel, writing to you from MA... I m male, 63 years of age, ~ 180 lbs @ 5 9 ht... For the last several months, have been experiencing involuntary leg muscle spasms ONLY when lying down... Duration is anywhere from fractional of a second up to 2-4 seconds duration... can be either leg, ALWAYS feels like an electric shock running through, ALWAYS run from thigh-to-calf, and can ALWAYS feel it coming a second or two away... YOUR THOUGHTS, AND THANK YOU!!!