Why not just drink a soda?
Avoid drinking soda. Drinking soda is actually counterproductive. Any caffeinated beverage is dehydrating. Don’t substitute caffeinated coffees, teas and sodas for water. Caffeine acts as a diuretic, causing you to lose water through increased urination. Alcoholic beverages have a similar effect. Remember when it’s warm outside – cold water (not carbonated soft drinks or sports drinks) is the best fluid for keeping hydrated. Cool water is absorbed much more quickly than warm fluids and may have a positive effect on cooling off your overheated body.
