<p/><br></br><p><b> About the Book </b></p></br></br>Designed for readers who want to keep their minds sharp and stave off the mental effects of aging, this book presents a 60-day program that consists of daily worksheets of simple mathematical calculations that take less than five minutes to complete.<p/><br></br><p><b> Book Synopsis </b></p></br></br>This book was a number one bestseller in Japan, selling more than 2 million copies! Designed for readers who want to keep their minds sharp and stave off the mental effects of aging, this book presents a complete 60 day program to build a better brain. The program consists of a daily worksheet of simple caclulations that takes less than 5 minutes to complete. Each week, readers take a short evaluation test to measure their progress. The world has long recognized that physical exercise helps maintain a healthy, well-working body. Now it's time to acknowledge that our brains need a regular work out too!
Cheapest price in the interval: 12.99 on March 10, 2021
Most expensive price in the interval: 12.99 on October 22, 2021
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