i also found the comment about drinking "pure" or distilled water a bit strange. pure h2O intake all of the time without the correct salts can cause several problems, including heart palpitations and acidosis. a proper electrolyte balance is essential for proper operation of the heart. Ca,K,Na, and Mg are all necessary in a properly functioning heart, and distilled water dilutes these healthy "impurities" to an unsafe level. there are several articles posted on the benefits and drawbacks of drinking distilled, ro, or "pure" h2o. just do a google search and read up.