Just thought I'd share a treatment....during my last pregnancy, I got these all the time. Finally someone told me to flatten my foot out when it happens. My reaction was always to point my toe, which makes it WORSE. So if you get them, reach down and pull back on your toes and it will go away immediately, at least mine do. Also drink some water, because it happens more when you're dehydrated (hence the reason it most often happens in the middle of the night when you haven't had anything to drink for a while).