Flexibility is an important component of physical fitness and good health. Regular training can result in flexibility improvement. The amount of flexibility a person should develop is open to question, but minimal levels seem necessary to optimal performance and prevention of injury. (CJ)

A significant relationship exists between a person's body concept and his general self-concept. Physical educators need to be more concerned with the development of the body concept in children. Understanding how the growth process affects performance ability can help the teacher plan activities based on individual readiness factors. (JN)

Learning, beginning in infancy, depends chiefly upon the nature and quality of movement experiences. Since 50 percent of a child's potential for learning is developed by age five, it is essential that movement programs be devised for children of preschool age. Movement programs must be geared to the individual child's developmental level. (JN)