In reply to zimpara:
If I could avoid cramp without really holding back on what I do it would be transformative for me.
> Cramps appear when you've worked untrained muscles to failure-caused trauma.
Not just untrained; I've had excruciating thigh cramp when extremely hill fit but also very fatigued. I think fatigue rather than lack of training is more accurate (though, if untrained, fatique will come on quicker).
I understand that low magnesium and potassium contribute and I have combined capsules of them.
I drink electrolytic carbohydrate stuff to keep hydrated.
I stretch and massage after hard exercise, especially if having to be static (say in a car).
All above seem to help, but I still live in terror of the pain.