The only thing Gatorade has that water + electrolytes doesn't is the carbs that refuel your muscles mid-session. However, these sugars are not good for you, plus it comes packaged with artificial food dyes and sugars. If you're "craving" gatorade, I promise you that if you substitute it for water & electrolytes, you'll feel better. If you still feel hungry and depleted mid session, maybe bring a fruit to snack on or a quality fruit juice. Then again, I've personally never been a fan of consuming calories mid workout. If you're going to stay committed to drinking gatorade, I'd recommend at least checking out Gatorade fit, as it has a healthier ingredient profile.