Don´t drink these like water.You should drink after your work out/ aerobic exercise, so it´s good for recovering all the carbohydrates you´ve lost recently.
From wikipedia:
The drink is intended to rehydrate and to replenish the carbohydrates (in the form of sugars sucrose and glucose) and electrolytes (sodium and potassium salts) depleted during aerobic exercise, especially in warmer, more humid climates.