Originally Posted by almeeker
Gatorade and Powerade were developed to recharge elite athletes functioning at peak performance. Since I hardly fall into the "elite" category, and my "peak" falls well short of those that do, I stick to water. Besides the idea of drinking "sweat" sort of grosses me out.
That's just the marketing spin
If I'm expecting to sweat a lot, such as playing tennis in the heat, I do drink some carbs/electrolyte. For explosive exercise, the extra sugar helps. It's burned. For lighter workouts I agree it's not neccessary.
For heavyish resistance workouts sweating isn't usually an issue,but protein/fast carb afterwards (shake) as Mike mentioned helps muscle recovery/rebuilding. Carbs via insulin response stimulate amino acid uptake by the muscles.