Magnesium and potassium, along with sodium and calcium, are examples of electrolytes that are present in the blood. Electrolytes help trigger and regulate electrical impulses in the heart and low levels of magnesium and potassium can lead to an electrolyte imbalance, which can contribute to arrhythmia.
Passing hard stools is usually as a result of constipation or the infrequent movement of the bowels. Most healthy people have at least three bowel movements per week, according to MedlinePlus. If you are unable to have a bowel movement or are having difficulty passing stool, contact your doctor.
Well I can tell you that flat stool is very common problem today. Real cause is unknown but there are some theories. One of them is that bowel spasm cause this symptom and some neurogenic disorder causes bowel spasm. It is confirmed that taking a fiber supplement as psyllium can make your stool normal shaped again. I had similar problems a year ago. My friends told me that taking some fruits with fibers like bananas can make your stool around again and so I did.