As we advance in our boomer years, we start worrying about where we left our car keys. We also know that this is the time in our lives to get lean and mean, so we have a fighting chance to ward off serious conditions such as diabetes and heart disease.

There is now increasing evidence that even a light amount of activity can boost our brain power. In the New York Times, Gretchen Reynolds writes about a significant study that tracked a large group of elderly folks over a period of two to five years. Canadian researchers found that modest activity, such as gardening and walking, helped their cognitive functioning.

Another study showed light-duty weight training helped a number of older women improve their brain power.

The article cautions that there’s no proof exercise can prevent serious cognitive conditions, such as Alzheimer’s Disease.

For you baby boomers, try a little activity. It may cut down the number of times you look for your keys.