Homemade sport drink I'm trying to develop a recipe for homemade sport drink as Gaterade and the like contains unhealthy and/or unnecessary ingredients that I dislike.  I found a base recipe I'd like to work with to variate and tweak: http://wellnessmama.com/2575/natural-sports-drink/ .  Is there any obvious aspects in this recipe that need modification and/or can be improved?  One particular question is if the tea liquid will be chemically reactive to the calcium tablets and be health-wise unviable?  The goal is to make the drink all at home and let it be healthy and well suited for drinking during performing sports.
This recipe is essentially sugar and salt added to a "normal drink," so the rest of the recipe ought to be fine assuming good quality ingredients.