C.J.
Trace minerals are very important if you're going to be sweating at all. When our bodies perspire, we sweat out the electrolytes and minerals (salts!) our bodies NEED to function. Without minerals in your water, if you JUST drank water, you run the risk of getting water poison. You'll feel nauseous, headachey, dizzy, etc.
I dislike Gatorade as well, because of all of the bad ingredients in them (high fructose corn syrup, artificial colors and dyes, etc). Water with trace minerals is the best to drink.
Trace minerals are good for children. Not 40 drops for them, of course. I would only put 3-5 drops of trace minerals in a glass of water for kids.
As long as you're sweating, you can't have too much, so don't worry about that.
By the way, if you ever DO get woozy feeling after a workout, drink real lemonade (lemon, water, sugar) with SEA salt in it. It re-balances your electrolytes.
Good luck!