Exercise impacts neurotransmitter levels in the brain by stimulating the release of chemicals that improve mood, focus, and overall cognitive function. Physical activity increases endorphins, often called "feel-good" hormones, which help alleviate feelings of stress and anxiety. Additionally, exercise improves the availability of serotonin and dopamine, which regulate mood and pleasure. These changes can enhance mental clarity and boost motivation for physical activity. Thus, regular exercise not only benefits physical health but also plays a crucial role in maintaining optimal mental well-being and improving quality of life.