The brain is arguably the most important organ in our body. It is responsible for every action we take, every thing that we feel and so much more. It stands to good reason that with such a large impact on our lives we would want to take care of our brains so that we don't accidentally sabotage ourselves and live healthy happy lives.
Exercise helps memory and thinking through two ways; both direct and indirect.
Directly, exercise benefits us by reducing insulin resistance, reducing inflammation, and stimulating the release of growth factors (affect the health of brain cells, the growth of new blood vessels in the brain, and even the quantity and survival of new brain cells). It does this by increasing our heart which pumps more oxygen to the brain. Exercise also stimulates the brain plasticity by stimulating growth of new connections between cells.
Indirectly, exercise improves mood and sleep.These things reduces stress and anxiety. When you experience stress and anxiety these frequently result in negative cognitive function.