What quality does Joe add to his speech about the abuse of steroids in physical fitness?

In Joe's speech about the abuse of steroids in physical fitness, the quality he adds is credibility. When discussing a serious topic like steroid use, especially in the context of health and fitness, it's crucial for the speaker to establish trust and authority on the subject. This can come from personal experience, reputable sources, scientific studies, or statistics. By incorporating credible information and presenting it in a knowledgeable way, Joe can enhance his audience's trust in his message, making them more likely to understand and accept the dangers associated with steroid abuse.

Establishing credibility allows the audience to feel assured that the information being presented is not only accurate but also well-backed by reliable evidence. This trust is essential when addressing concerns that may affect the audience’s choices and beliefs regarding physical fitness and health.