Maybe some of you have discovered this already, but it was new to me.
Even in the summer, my feet are still freezing with the air conditioning everywhere. I get leg foot and legs cramps mostly in the middle of the night. I started using magnesium oil before I go to bed and the leg cramps have subsided and best of all my feet are warm when I wake up in the morning. We'll see how much it helps in the dead of winter, but it certainly a step in the right direction with no drugs involved. I use Life Pro Pure Magnesium Oil, but I suppose any brand will do. It leaves a somewhat tacky feel on the skin( it is really not an oil, but magnesium chloride). Massage it in and leave it on for a while so it will absorb into your skin, then rinse it off if you don't like the residue it leaves. Hope it helps.