Analyzing Organizational Structure in a Speech

Read the following excerpt from a speech on the significance of physical activity:

"Physical activity is crucial for maintaining a healthy lifestyle. It not only strengthens our bodies but also enriches our minds. To illustrate this point, let's consider two contrasting scenarios. Imagine a day filled with exercise, where one engages in activities such as running, cycling, or dancing, invigorating the spirit. Conversely, picture a day spent entirely sedentary - glued to screens and couches. Which day would you prefer? From these scenarios, it becomes evident that our choices directly affect our well-being and overall quality of life."

Based on the excerpt, how does the speaker organize their ideas to advocate for physical activity?