Do you think sitting and studying all the time will improve your grades?Think again．Getting
1.What can taking regular walks help older people do 2.What animal is tasted in previous reserrch?3.How many people were tested by neuroscientists from the University of Illinois?4.What can be good news for news for grandparents?5.Can exercese help you study according to the passage?
　New research with older people suggests that taking regular walks helps them pay attention better than if they didn't exercise．Previous research had shown that mice learn，