Children between the ages of 3 and 5 are typically vivacious and enjoy turning almost everything into a game. This innate playfulness is beneficial, because physical activity helps them develop the motor skills and confidence they’ll need for the rest of their lives.

The United States has witnessed a massive increase in childhood obesity in recent decades, and obese children often grow up to be overweight or obese adults.

Introducing tennis to 4-year-olds can be a challenge. The kids can get frustrated when they can't hit the ball over the net or when they miss the ball entirely. Using tennis games to introduce various aspects of the game to 4-year-olds can be a good way to get them comfortable on the court.

Your kidneys filter out waste products, excess fluids and salts from your blood and deposit them into your urine so they can be removed from the body. Normally, your urine does not contain any protein because proteins are too big to fit through healthy kidneys, according to the American Academy of Family Physicians.

The first modern fitness programs began in Europe and spread to America during the 19th century. As the United States became an industrialized nation, people spent less time performing physical labor. Thus, the need for physical education programs in the schools became vital to ensure a healthy and fit society.

The best stomach exercises for kids are designed to improve your child's strength in his lower and upper abdominal muscles as well as his core muscles.

Physical education is an important component for any age, but middle school students are at an in-between period where fitness can have a big impact on their physical health and overall outlook. Middle school is an awkward time of physical development and often significant changes in social relationships.

Although team sports can provide fun-filled memories that can last your child a lifetime, they are also a teaching tool for the development of important social skills. Sports can teach him to be competitive, yet fair and honest.

An estimated 12.5 million children between the ages of 2 and 19 are obese, according to the U.S. Centers for Disease Control and Prevention. Although genetics and diet play pivotal roles in childhood obesity, the CDC also notes that passive media viewing can contribute to this epidemic.

Heisman Trophy winner Johnny Manziel's off-season behavior has raised questions about the appropriateness of using athletes as role models. Athletes work hard and stay fit, but that may not be enough to influence children for good.

Children are increasingly becoming less active. Lack of physical activity in childhood leads to increased risk of being overweight or obese in adulthood, as well as obesity-related health problems.

The Olympics theme fits well into the physical education curriculum at any grade level. The kids participate in activities that simulate actual events in either the Summer or Winter Olympics. The theme is ideal during an actual Olympics year, but you can use it anytime to add variety to gym class.