It deals with questions we have asked ourselves, such as .... what about all those calories, and is not water just as good.
It is a long article, but, briefly, the point is that these drinks (think GatorAde, PowerAde) are ok for energetic kids and adults who are really exercising.
But, not ok for a drink with pizza for young or sendentary types.
At MIT we stock these "Sport Drinks"
Vita Rain, from CostCo and the TalkingRain company. Calories: 0
G2, from GatorAde. Calories: 70 per 20oz bottle
G, from GatorAde. Calories: 130 per 20oz bottle
Sometimes we stock low-cal or no-cal teas. However we have discontinued carrying Arizona sweetened teas because of the very high calorie count.