Can you trust the calorie counts on fast food menus? Dr. Oz has a special investigation of your favorite guilty pleasures and reveals some shocking statistics. See if your favorite fast food meals are worse than you think.

Click here to watch part 2.

Is This the Key to Ultimate Hydration?

See how electrolytes work in your body.

Is This the Key to Ultimate Hydration?

Whether you're trying to stay hydrated for your workout routine or rehabilitation, recovery and hydration is so important to keeping your body performing like it should. So how do you make sure that happens? You need electrolytes — the minerals that give electrical power to your body. What the video below to see how they get to work inside your body and how you seamlessly add them to your day.

Presented by USANA.