Originally Posted by ericgu

Electrolyte replacement is a controversial subject. Hammer's theory is that a) you need a whole bunch of different electrolytes during exercise and b) you shouldn't get too much salt.

I think they're nuts. You do use electrolytes, but for most of them, you have enough supply to last days. Salt is the exception, but hammer's idea that you shouldn't get too much salt (hard to do if you get enough water) means that you can't take enough of them to get enough salt without getting too much of the others electrolytes.