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In this short monologue, the speaker cites scientific research within the field of psychoneurophysiology of exercise that demonstrates the effectiveness of using a good pair of headphones to listen to music you enjoy while training. He explains that brain‑mapping studies show that the right music can enhance the development of the body during exercise, and that neglecting to wear headphones may limit potential gains. However, he cautions that not all music works as a training aid; low‑energy or genre‑inappropriate tracks—such as a traditional "sertanejo de viola"—are ineffective for boosting workout performance.
