Research into the impact of regular physical activity on brain function, shows that exercise benefits both short-term and long-term memory. Natural aging processes in the brain allow for decline in brain density. But recent studies show that this decline can be slowed with higher levels of physical fitness. The study published in Neurobiology of Aging reveals that exercise enhances brain function in the regions associated with memory. Anatomical differences in grey and white matter of brain are found between fit and unfit people.