Recent research shows that aerobic exercise leads to a rapid increase in the number of neurons produced in the hippocampus in the brain. Aerobic exercise is sustained exercise such as swimming or jogging. However, if left as is, in twenty-eight hours these newly formed neurons will disappear without having served any purpose. It’s a real waste. But give these newly formed neurons some intellectual stimulation and they are activated—they connect with the network in the brain and become an organic part of the signal-transfer community. In other words, the network within the brain becomes broader
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