There are no set rules about how long to wait before taking a newborn out into the world or when to let people near the baby. Some doctors recommend that parents wait until their baby is a few months ...

Good nutrition and exercise are important, but how do you feed a picky eater or encourage kids who don't like sports to play outside? Find out how to keep kids active and eating well.

How Does the Brain Work? And How Does the Nervous System Work? How do you remember the way to your friend's house? Why do your eyes blink without you ever thinking about it? Where do dreams come from?

What Is the Respiratory System? When we breathe, the respiratory system takes in oxygen and sends out carbon dioxide. The cells in our bodies need fresh oxygen to stay alive. As cells do their jobs, ...

What Is the Digestive System? Food is our fuel, and its nutrients give our bodies' cells the energy and substances they need to work. But before food can do that, it must be digested into small pieces ...

You've probably heard countless times how exercise is "good for you." But did you know that it can help you feel good too? Getting the right amount of exercise can rev up your energy levels and even ...

The Internet is amazing! But it also has some things you need to watch out for. You're always you, of course. But if you use a smartphone, tablet, or computer to play games and text with friends, you ...

Toddlers learn new skills and test boundaries every day. This can make for some trying moments. Learn how to encourage good behavior, handle tantrums, and keep your cool.

What Are the Lungs and Respiratory System? The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out ...

Slow, calm, deep breathing can help us relax, manage stress, relieve anxiety and depression, and get a good night's sleep, among many other things. Breathing also helps quiet the mind in preparation ...

Frostbite is a skin injury caused by freezing temperatures. Sometimes it also injures deeper tissue. Serious frostbite can go all the way down to the muscles and bones. If you can't get to a hospital ...

If you've ever wondered how your muscles work, this movie has the answer!