Because if drink a sports drink it has a lot of sugar and you might get the calories back. But if you drink water it wont do you any harm because water doesn't have any sugar and you might loose a bit more weight.
Explanation:Why? Because, u are most likely running or jogging which is most likely sports and for me water is only for drinking like for lunch, breakfast And Dinner right for like normal stuff u use for to drink.Sports water it is for sports right and that is why its called sports water like it is for sports like Running, Jogging, etc.
That is my opinion,Your Welcome hope this helps! :)
