In my own opinion, water is still the best liquid to take during exercise and for the body in general. Water gives us the enough hydration that our body needs. Sports drink are good but they usually contain little amount of sugar and/or artificial flavorings as well. If you want to add flavors to your water, you can add fresh lemon, orange, cucumber or whatever you can to create your own recipe for an infused water. So for me, water is still the best. They have no sugar content! Just have to make sure that the water you drink is clean though.