Step-by-step explanation:
Researchers at the University of California, San Francisco found that people who got little exercise or watched at least three hours of TV a day did worse on tests measuring cognitive focus and speed than those who got more exercise or watched less TV. Yaffe's study found that people with low cognitive function are more likely to binge-watch TV than those with high cognitive function. However, the gap in cognitive function between high-volume TV watchers and infrequent watchers may widen over time. Physical exercise may help counteract the decline.
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