What is the origin of nighttime feet and calves cramps?

Several causes are possible, but the most common is a magnesium deficiency or malabsorption.  Sometimes they can also be caused by a lack of potassium.  Minerals deficiencies are often caused by toxicity which is channeled by basic agents in the system. The fastest way for the body to dispose of acid atoms is to monopolize the most accessible minerals.

Minerals deficits can also be caused by the overuse of calcium; it can lead to a lack of magnesium. In addition, excessive removal of electrolytes may be the cause of these deficits.

Obviously, the source of the pain varies depending on the environment and lifestyle of the patient.