I get these too and, like Erika, I take a warm (not hot as heat exacerbates my symptoms) Epsom salt bath. It works wonders for me and relaxes the nerves and muscles so I can get a better night sleep. I also take gabapentin before bed and if I seem to be having more jerks and/or restless legs, I'll take lorazepam.

BTW - If you can't get in the tub, soaking your feet in Epsom salt will help as well. You absorb the magnesium through your skin, which for me is an added bonus since I have tummy troubles.