Sleep Anxiety: Are We Obsessed with Perfect Sleep?

The argumentative method used in this speech is a combination of a logical and persuasive approach. The speaker presents evidence and facts to support their claims, such as the range of sleep that people need, the flaws in the messaging about sleep, and the effectiveness of CBT-I therapy. They also use persuasive techniques, such as appealing to the audience's emotions by highlighting the anxiety and obsession that can be caused by fixating on sleep data and the importance of sleep for overall health and well-being. The speaker also provides a solution to the problem by suggesting evidence-based recommendations and seeking medical advice. Overall, the speech presents a well-structured argument that is both informative and persuasive.