In looking back at Rappstar’s nutrition for IM, I’m curious if there is a scientific (or relatively non scientific) means of determing salt intake during a race longer than 8 hours.
http://forum.slowtwitch.com/gforum.cgi?post=2130585;search_string=salt;#2130585
The follow-up…which method/product of “salt” appears to be the leading contender?
What factors should one consider when determining race day intake? (heat, humidity, etc)