- Getting too much exercise or overusing the muscles.
- Standing on concrete for a long time, sitting for a long time, or putting your legs in awkward positions while you sleep.
- Not having enough potassium, calcium, and other minerals in your blood.
- Being dehydrated, which means your body has lost too much fluid.
- Taking certain medicines, such as antipsychotics, birth control pills, diuretics, statins, and steroids.
- Having flat feet.
- Having thyroid disease
I think only 1 & 3 apply; but I love how they feel the need to explain what being dehydrated means.
I have started drinking coconut water again and taking potassium supplements to combat this. There are very few things worst then waking up in the middle of the night in sheer agony because your legs are cramping up.