Final answer:
The best introduction for an essay on the effects of exercise on teenage health is one that directly mentions the increase in obesity due to lack of physical activity. Increased physical activity is crucial for burning more calories and combating obesity, a condition where obesity rates among teens have significantly increased.
Step-by-step explanation:
The MOST effective introductory statement for an essay about the effects of exercise on teenagers' overall health would likely be the one that states "Though teens are young and avoid many of the health problems that older Americans can face, many teens are becoming obese and unhealthy due to a lack of exercise." This introductory statement directly addresses the topic of the essay and sets the stage for discussing the impact of exercise (or the lack thereof) on teenage health.
Increased activity reduces obesity mainly because a more active individual will burn more calories. Furthermore, addressing childhood obesity involves more than just restricting access to junk food; it requires a comprehensive approach including physical activity and healthy eating as fundamental parts of a child's education. To target the lifestyle changes needed among teenagers, an advertising campaign could focus on the benefits of exercise with creative slogans that resonate with the teen audience, highlighting the urgency due to a tripling of obesity rates among teens since 1980.