Sports drinks were designed for athletes who have just finished an intense training session with massive sweating and glycogen depletion.
For this reason, sports drinks contain:
Water – to replenish lost fluid.
Electrolytes – to replenish electrolytes like sodium that were lost via sweat.
Sugar – because athletes need energy after an intense workout.
You don’t need any additional electrolytes unless you’ve been doing a very intense workout and most people are already eating too much sugar. One bottle of Gatorade contains over 30 grams of sugar.
You’re better off sticking to plain water, which you should certainly drink plenty of, especially around workouts.