Originally Posted by
Calsun
Actual studies of athletes have found that there is very little loss of electrolytes from sweating and that there was no need to replace them. One does need to have adequate water intake and one can gauge that for themselves by checking the color or lack thereof in their urine.
Actual observation has found salt crystals on surface of shorts and shirts during hot weather. I suppose it sublimates out of surface capillaries and re-crystallizes on the clothes, if it's not being lost through sweat?