Cardiorespiratory fitness in children may enhance the maturation process of pruning: thinning of cortex and loss of gray matter, enhancing performance
www.sciencedaily.com
From the article:
The study suggests, but does not prove, that cardiorespiratory fitness contributes to gray matter thinning – a normal process of child brain development. The study also offers the first evidence that fitness enhances math skills by aiding the development of brain structures that contribute to mathematics achievement.