Alhaji Atiku Abubakar at the gym: a new study shows that 150 minutes of exercise per week helps keep the brain healthier Exercise may do more than build body strength: A new research conducted in Germany shows it might also keep brain cells in shape. According to the study, exercise helps maintain the brain’s gray matter, which is linked to various skills and thinking abilities. So, keeping your gray matter intact may help prevent thinking declines, the German researchers explained. The report was published online Jan. 5 in the Mayo Clinic Proceedings. “This...