OMG MUSCLE CRAMPS

I have struggled with cramping ever since I was young. (I am 61 now)
The only thing that works for me is to keep hydrated and take some Calcium/Magnesium supplements with a minimum of 7 hours of sleep a day.
Massaging my muscles that get tight helps a bit too...
I have been through every test known to man over the years and the doctors can't find anything wrong.
What makes it worse is if I don't get enough sleep, work hard and sweat a lot.
Like mowing the lawn for an hour on a hot day for example.
I will surely get cramps, sometimes very severe in my calves, groin, sides, hands, and feet.
Sometimes if it's severe enough I get them all at once and everywhere!
This is my experience FWIW.