Exercise positively affects the aging process by promoting cardiovascular health, maintaining muscle mass, and enhancing bone density. Regular physical activity helps combat age-related declines in metabolic rate and improves overall body composition. It can also enhance mental health by reducing the risk of depression and improving cognitive function. Additionally, exercise boosts immune response, helping older adults fend off illnesses. Ultimately, staying active can lead to a higher quality of life and greater longevity by mitigating the physical and mental challenges associated with aging.