Quiz: Healthy Living for Every Age

If you're familiar with the phrase, "You are what you eat", you know the first step to staying healthy is to eat the right foods and know how much is enough. Along with exercise, a healthy diet can help you lose weight, increase your stamina, ward off illness and reduce health risks. Not only will you feel more energetic, but you're also likely to avoid long stays at the hospital. Chronic illnesses result in a whopping 2.5 billion days of missed work each year, according the Journal of Occupational and Environmental Medicine and result in half of the healthcare expenditures in the U.S. Take this quiz to learn more about how you can stay healthy. To read more about staying healthy, see NEWSWEEK's "Healthy Living for Every Age".

There are four things Americans should be doing to achieve "optimal health". Sounds simple enough, right? Can you guess what these four activities are and how many Americans actually follow them on a regular basis? (Click video for answer)

For ages people have been told they're supposed to guzzle eight eight-ounce glasses of water everyday. We'll let you in on a secret. That's pretty much an urban myth. So, how many glasses of water are we supposed to drink each day?

People are exposed to hundreds of chemicals on a daily basis. Which of the following contain potentially dangerous chemicals that humans could consume? A) Baby bottles B) household paints c) Farm-raised salmon D) Tobacco smoke

Doctors believe 30 minutes of exercise each day (in conjunction with a healthy diet) can ward off which diseases?

Let's face it. You're probably busy. On top of that, we'll assume that you're also occasionally stressed out. There are varying levels and degrees of stress, which can have (obviously) negative and (surprisingly) positive effects. Can you guess what the top sources of negative stress are for most Americans?