Summary: Regular exercise may help reduce declines in episodic memory for older adults. We all know exercise is good for us, but that still leaves plenty of questions. New research led by University of Pittsburgh psychologists pools data from dozens of studies to answer these questions, showing that older adults may be able to prevent declines in a certain kind of memory by sticking to regular exercise. "Everyone always asks, 'How much should I be exercising? What's the bare minimum to see improvement?' " said lead author Sarah Aghjayan, a Clinical and Biological Health Psychology Ph.D. student in the Kenneth P. Dietrich School of Arts and Sciences.