Improper habits of eating and physical activity account for 300,000 deaths per year in the U.S. - There is an epidemic of sedentary lifestyles. Twenty-five percent of adults are completely sedentary.
Physical activity declines dramatically during youth, especially in girls.
Health Behavior Change - Psychologists have been researching behavior change since early in the 20th century. Thousands of studies of humans and animals have produced useful principles and methods of behavior change. However, the quality of most classes is poor, and children spend very little time in PE being physically active. The study demonstrated that both PE specialists and trained classroom teachers provided children with better instruction and more physical activity at school. There were also improvements in some components of physical fitness and sports skills.