What factors contribute to the obesity problem?

1. Lack of exercise. "A substantial number of children fail to engage in any physical activity outside of school." (Chin & Ludwig, 2013, p. 1229). 2. Unhealthy diets, exacerbated by television advertising, and even schools also contribute to the problem (Goldfield, 2012). No PE, for example. 3. Unhealthy habits. The typical adolescent spends more than 5 hours a day watching TV, playing video games, and communicating on the Internet (Rideout, Foehr, & Roberts, 2010).