Hydrating with plain water is not as effective as consuming sports drinks that contain electrolytes. Why?
Water often passes right through your system while electrolytes like sodium help you retain the fluid you're drinking.
Most of the sports bars and energy drinks you consume while working out are murder on your teeth. They not only contain lots of sugar, the bars are gooey and stick to your teeth, creating breeding grounds for cavities. The solution? Brush your teeth as soon as you come in from a workout. Make it a habit, just like taking a shower. Your teeth, but not your dentist, will thank you for it.