The Truth About Sports Drinks (And An Alternative Choice)

Great post about what is in sports drinks!
http://www.holistichomemaking.org/2013/01/the-truth-about-sports-drinks-and.html
Their recipe:
1 cup filtered water
1/3 cup organic or freshly squeezed grape, orange or berry juice
1/4 tsp pure mineral salt ( an unrefined sea salt )
a pinch of baking soda
Another (from the comments) was:
apple cider vinegar
cranberry juice
water
a little sweetener of your choice to taste