There's more to improving your GRE scores than practicing with a study guide. If you really want to do your best on the GRE, add physical and mental workouts to your study routine, too.
Researchers have found new evidence that regular cardiovascular workouts may boost brainpower as much as 20 percent, regardless of age. According to one study of adults ages 21 to 45, a three-month exercise program that included aerobic activity increased blood flow to the brain and caused new nerve cells to grow in the part of the brain that's responsible for memory and cognitive aging [source: Stenson].
Mental exercises can boost brainpower, too. Whether you study a map instead of using a GPS to navigate to a new destination or seek the novelty of mastering a brain-teasing game like Sudoku, thinking your way through new and complex sets of problems will help you develop problem-solving skills, as well as the cognitive ability to understand relationships between varying concepts [source: Kuszewski].
Embarking on a course of mental and physical exercises will, at the very least, give you the stamina to complete the nearly four-hour exam -- and could potentially result in improved GRE results, too.