Exercise is fun! Exercise is an activity that makes your body strong. How can you exercise? You can play soccer. You can ride a bike. You can rake leaves. You can play football.

Sound a little elementary? It should -- because it comes straight from my first-grade kid's Weekly Reader. Written for your average grade school student, the Weekly Reader is a four-page magazine of sorts that pays special attention to a special topic. This week's topic: Fitness. In addition to the lesson I featured above, this little publication also includes a run-down on bones.

Your body has many bones. Exercise keeps those bones strong. Some bones hold up your body. Other bones protect the inside of your body. All your bones together make up your skeleton.

And X-rays.

An x-ray is a picture of bones. Doctors look at X-rays to see if bones are healthy.

There's also a picture of people engaging in exercise, a word find, and a question for the week: What kinds of exercise can you do indoors?

It's all very simple. And basic. And not so far from what every one of us should be embracing. You might be a first-grader; you might be a grandmother. It doesn't matter. The concept of exercise never changes. We need it when we're 6 and when we're 66. We need it at all ages in between. So in the spirit of this week's Weekly Reader, I say, "Let's Move!"