How Do You Grow?

Sigh. Your shoes are too little - again. It seems like every month or two you are outgrowing your shoes. You wonder just how big your feet will get! Did you ever wonder exactly HOW your body grows? Do your feet stretch? How do the hard bones in your arms and legs get bigger? The answer is cells.


A cell is the smallest part of a living thing. Some living things are made of only one cell. You are made of billions of cells!


You are growing very fast. But your arms, legs, and body don't just stretch like rubber. Bones get bigger by adding new cells. Skin grows by making more skin cells. Muscles grow by making more muscle cells.


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