Today, we’re featuring an episode from NPR’s science podcast Short Wave. In it, host Regina G. Barber talks to NPR brain correspondent Jon Hamilton about MENTAL EXERCISES.

Scientists have found the first compelling evidence that cognitive training can boost levels of a chemical that typically declines as people age. And previous studies of people have suggested that cognitive training can improve thinking and memory. So how does it all work? And by how much does it all work? Find out with this episode of Short Wave.

Follow NPR's Short Wave podcast on Apple Podcasts and Spotify for more episodes like this, featuring new discoveries, everyday mysteries and the science behind the headlines.

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#277 Fight Club