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Why do we throw up?

We throw up when our stomach is irritated or overfilled. Some people throw up because their stomachs don’t pass food easily and food flows backwards into the esophagus. But most people thr…

Why do people snore?

Everybody snores. The snoring noise we make while sleeping comes from the vibration of our nasal passages as we breathe. The muscles in your nose and throat relax when you sleep and narrow your a…

Why do some people have freckles?

Freckles are small “birthmarks”. They are made of collections of melanocytes, or skin cells, that produce pigment. Most people inherit a tendency to have freckles from their parents…

Do we really need breakfast?

Some people don’t feel like eating in the morning. However, it’s very important to eat breakfast. People who eat breakfast do better in school, snack less and have better weight tha…

How does hair grow?

Hair is made at the base of a hair follicle. There are a thousand hair follicles on your head. Not all of them are working at the same time. Only about 80% of your follicles are producing hair a…

Why do leaves change color in the fall?

Why do leaves change color in the fall? One of the sure signs of fall (besides the beginning of a new school year) is the change in color of leaves from green to bright yellow, orange and red. Trees…
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