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Moms, as adults, you may think of exercise as work. But for young children, it should be play. Activity comes naturally to children, who are developing physical skills along with mental and social abilities. They love to run, climb, jump, and explore. They might seem happy enough to sit and watch videos or kiddy television shows for long stretches (and that might seem like a break for you), but don't let them become sedentary. Some experts advise that children spend at hour in structured play plus an hour in free play every day.

You are your child's primary role model. Happy playtimes will help your child grow in every way, as well as being a source of joy and energy for you. Here are some of the many possibilities for making activity fun for everyone.

• Take a hike. Not that 10-mile trek up a mountain, but maybe half a mile or a mile on a local nature trail. Make it an occasion by gearing up with backpacks, hiking shoes or boots and sunscreen, and take some healthy trail snacks and pure water.

• Go to the park. Fun is contagious there. Count how many times your child says “Push me” while in the swing.

• Climb. Many playgrounds have safe equipment and soft surfaces for children to climb and slide. Find a play area that's geared for your child's age and abilities.

• Play ball. Nerf balls of all shapes are great for this child/parent game.

• Dance to the music. A great indoor activity. You don't need video. Popular music and children's songs work well.

• Be an urban explorer. Look at the plants, birds and animals in your neighborhood and at your local park. Let your child tell you what she or he sees, hears and smells.

• Enroll you child in swimming lessons. Young children can learn to be water safe and to swim. Not only is it a fun activity, but it can be a lifesaver.

• Check out family fitness facilities. Find out about preschool and children's programs and Mommy and Me activities at local YMCAs, community colleges, public fitness programs, and private gyms.

• Play games. Simple games can help a child develop physically and can be fun. “Mother, May I?” or “Simon Says” with hopping, skipping, jumping, giant steps, and walking sideways and backwards are active and easy. Don't push a preschooler into competitive or complex games.