What cause muscular cramp during prolonged fast?

Biochemical causes, please.
Answers:
The body is not getting the nutrients that it needs to repair cell tissue. If you are doing a total fast, adjectives foods and liquids, the acids that build up in the muscles are not being flushed out as the blood volume is dropping w/o fluids. It is matching reason football players who play in heat and sweat most of their fluids out lapse up with cramped muscles, "charlie horses" etc. The electrolytes become unbalanced, muscles cramp, blood volume drops, and death could follow. Is it a religious hurriedly?

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