I've always been a plain 'ol water drinker... didn't matter the exercise, just water... before, after, during, just water. BUT then I bought the Lemonade Accelerade on BonkTown and can't run without it! (I also bought Fruit Punch, but haven't tried it yet).
I didn't find it until I was halfway done with the Lemonade, but there is actually a little plastic scoop provided in the container. Exactly one scoop-full is the perfect amount. Prior to finding it, I was using a spoon and if you put too much in a 12 oz. glass, it was very powder-y.
All-in-all, I am very happy with this product!