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Brain Exercise Isn't Just for Seniors
The human brain is made up of nerve cells called neurons; they are connected by synapses, which transport information from one neuron to the other. Just like other muscles and organs, the brain changes with age; synapses fire more slowly, some cells die off and the overall mass of the organ shrinks. However, advances in brain imaging and neuroscience, coupled with studies of twins, have shown that not all change is genetically predetermined or inevitable.
Source: Dynamic Chiropractic