sodium Question

Actually, potassium's better for electrolye replacement. But, do you cramp a lot? Do you have a really high sweat rate? Is your race going to be really hot? Or long?

If you answered yes to any of those questions, you might want to experiment with electrolyte replacement in training. Don't just start popping lots in a race, or you may have unexpected GI issues.

As for what to use, any online tri retailer will have "Endurolytes."

Cramps from cold water aren't caused by electrolyte deficiency, but rather by blood being shunted to your core to keep you warm. If you wear a wetsuit, you should be OK (except for the foot cramps). I'm not sure what to recommend to help prevent that, except maybe for stretching your arches prior.

Electrolyte solutions would be the best, your body needs the balance potasium is in the cell where sodium is outside the cell and they work together when your muscles are performing! This link below explains it well! Aloha!

http://greenwoodhealth.net/np/potassium.htm