We all know that cognitive fitness, keeping our brains sharp by keeping them working and exercised by engaging in a variety of cognitive activities, is crucial for long term brain health.
But physical activity is important for long term cognitive fitness too. Recently my eye was caught by this paragraph in an article in the AMA’s American Medical News:
Each time a dance step is learned, for instance, new pathways are formed. “Dancing is excellent for the brain and body,” says Vincent Fortanasce, MD, clinical professor of neurology at the University of Southern California in Los Angeles. He wrote the Anti-Alzheimer’s Prescription. “Not only are you moving around more, your brain is in constant motion as it recalls steps and movements.”
In other words, in the same way that new cognitive and intellectual activities—trying new kinds of puzzles, or games, for instance, will “grow” our brains, so do does physical exercise and learning new physical skills. As the AMA Medical News article puts it:
“Exercise can actually increase neurogenesis and increase the size of the hippocampus,” says Dr. Fortanasce, who promotes isometrics and weight-bearing exercise. “Exercise also increases youth hormones. And novelty, doing new things, builds branches.”
In a 2006 study in the Journal of Aging and Physical Activity, Brandeis University researchers found that strength training increased the participants’ working memory span. The higher the level of resistance, the more memory improved, suggesting that strength training benefits not only the muscles but also the mind.
New activities, new challenges, new skills, are key for physical and mental fitness as we age.



