This meta-analysis synthesises evidence from numerous studies to evaluate how structured physical activity alleviates symptoms of depression and anxiety across various demographics. The research concludes that exercise is a highly effective intervention, often matching or surpassing the results of traditional medication and psychotherapy. While all forms of movement are beneficial, aerobic activities and supervised group settings offer the most significant relief for depressive symptoms. Conversely, shorter, low-intensity routines appear particularly efficacious for managing anxiety. The authors specifically highlight emerging adults and postnatal women as groups that experience the greatest mental health improvements from these interventions. Ultimately, the study advocates for health professionals to prescribe tailored exercise programs as a primary, cost-effective treatment for psychological distress.