An interesting item on one of the A-F-A mailing list pointing out that during an arrhythmia the heart releases a chemical which makes you wee more. OK but pointing out that it is to excrete salt. Hence for example needing to get up more for the toilet at night.
Now for me during exercise I have found replacing salt to be very important to reduce arrhythmias. I use lo cal salt to give a mix of calcium and potassium. So maintaining salt balance appears to be important.
Yet apparently the heart needs to excrete salt. Intriguing. Both may be true but if so how and why?