We know the electrolyte is needed to regulate neuromuscular activity of the skeletal,
cardiac and smooth muscle. So, when the
potassium level becomes low, it results in muscle malfunction and muscle twitchings, and you have experienced muscle crapms.
Low Potassium can also cause the heart contracts prematurely.... muscles that assist in breathing become weak and lead to respiratory arrest. The kidneys become unable to concentrate urine and this leads to excessive urination and thirst.