Exercise positively impacts brain health across the lifespan by enhancing cognitive function, mood regulation, and overall mental well-being. Regular physical activity increases blood flow to the brain, promoting the growth of new neurons and improving connectivity among brain regions. It also boosts the release of neurotrophic factors, which support brain health. Exercise has been shown to reduce the risk of cognitive decline and mental disorders, such as depression. As individuals age, maintaining an active lifestyle becomes essential for preserving mental sharpness and emotional balance.