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A Scientists claim that people working out develop Alzheimer´s and other sedentary folks later, than people who don’t work out. They claim that vigorous exercise can cause older nerves to from dense that make the brain run faster and more efficiently. For decades scientists have believed that growing back new nerve cells by working out was impossible. The process starts in the muscles. Every time a muscle contracts and releases, it sends out chemicals that travel through the bloodstream and into the brain. One of the chemicals is the protein IGF-1 and when it reaches the brain it starts the
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