Preadolescence refers to a period of time before the development of secondary sex characteristics (puberty) and corresponds roughly to ages 6-11 years in girls and 6-13 years in boys. Children should be encouraged to participate regularly in a variety of physical activities that enhance aerobic endurance, strength, flexibility, and skill-related fitness abilities (i.e., agility, balance, coordination, reaction time, speed, and power). Regular participation in physical activity programs can improve health- and skill-related components of physical fitness and have been found to enhance psychosocial well-being in school-aged youth. Furthermore, increasing opportunities for regular moderate to vigorous activity (MVPA)