It happens to all of us – we walk into another room to grab something and suddenly can’t remember what it is we were looking for. For the most part, episodes like this can be attributed to lack of concentration. Unfortunately, we can all count on these events happening more often as we get older. Well, new research shows, maybe not.

Much of our creating and accessing a memory day-to-day is based upon pattern separation. Although we might eat oatmeal for breakfast or park in the same area each morning before work, we tend to recognize the smaller differences in each day. This helps separate and “file” our memories accordingly. You may have had oatmeal three days in a row, but maybe you had it with apples on Monday, yogurt yesterday and cinnamon today. These small, but significant, details help provide a distinct memory.

Age, as we all understand, has a tendency to dull the ability to make these distinctions causing our memories to blur together. That’s because of a degenerative process caused by aging to our dentate gyrus – the part of brain thought to be responsible for the formation of new memories.

But new research has shown that there may be a way to help stimulate this portion of our brain and help stimulate the creation of new brain cells. No, it’s not crossword puzzles or brain teasers – it’s good, old fashioned exercise.

In a study conducted at the National Institute on Aging, researchers found that mice which regularly and voluntarily exercised using their play wheels showed an increased ability to separate closely spaced images on a screen – a test used monitor pattern recognition and memory in animals. When compared with their sedentary roommates, the mice that ran more frequently also showed more new neurons within their brain’s memory zone.

Although the extent to which exercise can help facilitate this reaction in humans is still unknown, it does lead to some promising theories.

The bottom line is exercising can never hurt. So why not try it anyway? Get out and get active. The only problem is remembering where you left your keys.

Originally Posted June 2011 on APOGEE Wellness Blog