I started off getting cramp in my calf’s at night so stretched before bed. This appeared to move the cramping to the muscle running along my shin. For last few months I have elaborate routing to stretching both muscle groups but still need to change angle of my feet during night since if toes point down, calves tend to cramp and vice versa. ie both need to be kept slightly stretched.
However last few days I’ve been stretching the tendon that runs the length of the sole of my foot as well. Kneel with toes facing forward and lean back. Been pretty miraculous, I assume because everything connected. I suspect this tendon extremely tight in a lot of people since tricky to stretch and people wear flip flops and slippers when really need arch supports.
I asked Guys about Vibro Plates, they said should be okay providing no other medical issues. This is a great way to get rid of cramping. Have it near your bed and then rest cramping limb on it with machine on lowest massage setting. Very quickly loosens off the muscles.