Muscle cramps are sudden, uncontrolled contractions of the muscles.
They can occur when potassium levels are low in the blood. Within muscle cells, potassium helps relay signals from the brain that stimulate contractions. It also helps end these contractions by moving out of the muscle cells when blood potassium levels are low, your brain cannot relay these signals as effectively. This results in more prolonged contractions, such as muscle cramps.
Potassium helps start and stop muscle contractions. Low blood potassium levels can affect this balance, causing uncontrolled and prolonged contractions known as cramps. My regimen?, 3 bananas a day, foot cramps went from almost every night to 1 or 2 a month, for all its worth, GODSPEED!