Unlike athletes, most people don't exercise hard or long enough to necessitate the need for drinking these beverages. The primary purpose for these beverages is to provide much-needed calories and electrolytic replacement during or immediately following intense and long-duration (i.e., more than an hour) exercise. In most cases, plain old water is all that's needed to fully hydrate following physical activity.
Brian Danley, CFT
"Motivation is what gets you started. Habit is what keeps you going."