You know - just a quick post to say that I once had that salt imbalance too. Pretty weird eh? I was on Atkins induction, working outside in the hot sun, loading up a truck full of lumber and doors and stuff from Home Depot. Got what I thought was the usual 'induction flu' or 'ketosis' or whatever...but it turned out that I was low on salt. Very odd. Makes me nervous, to be honest.

Ok - off to look at your fitday thing.