With regard to RSL I have found some relief from a machine which is a circulation electrical stimulator, when you put both feet on gives a gentle electric pulse. There are various programmes and varying intensity which you are able to choose. Inevitably when I get into bed the 'hot ants' start creeping over the soles of my feet and my legs start to twitch and jump, I then get up and have a 30 minute session on the machine. I usually find it works and go back to bed. Last night I used it prior to getting into bed and I managed to get off to sleep without an 'attack'.