magnesium oil for cramping

I always had massive cramping during my period. Then I started learning about PH. It was very acidic. Magnesium helps muscles relax (it is alkaline). When I started using magnesium with a bit of water on my torso to help me sleep, I realized that I no longer cramped. Now my PH is high, but once in a while I cramp a bit and use the oil again. Hope this helps someone:)