This podcast episode explores the impact of aging on skeletal muscle and the importance of exercise in maintaining muscle health. It discusses the role of epigenetic changes, specifically DNA methylation, in muscle aging and exercise adaptations. The conversation highlights the complexity of gene expression regulation through epigenetics and the potential benefits of targeting specific genes for exercise adaptation. The episode also touches on the use of genetically engineered mice to study gene activation and deactivation, as well as the relationship between methylation and aging. Overall, the episode provides insights into the molecular research behind muscle aging and exercise adaptations, emphasizing the need for further research in this field.