I have to disagree on the sports drinks, juice, and such. Use a good salt like Celtic or Redmond. I didn't see an electrolyte-free two days unless all those foods were salt-free. Doubt it.
Yep, more pure foods soon, but one thing at a time. Sports drinks are as bad or worse than diet drinks.
Here is a homemade electrolyte drink that is far, far better than any commercial drink. A friend who is studying to be an herbalist gave it to me when we were talking about the flu and dehydration:
Basic electrolyte drink:
4 oz water (half cup)
1 tsp honey
1 tsp lemon juice or raw apple cider vinegar
pinch of Celtic salt
Better version (make up ahead of flu season and keep the concentrate in the fridge):
Put chopped fresh horseradish root in a jar. Fill with raw apple cider vinegar.
In another jar, put chopped garlic and onions. Fill with raw wildflower honey (other honeys may contain pesticide residue, etc.)
Let both sit for three weeks. Strain, mix together, add Celtic salt. Use 2 tsp in 4 oz water as often as desired.