Advertisement

How challenging do mental exercises need to be to benefit my brain?

Dr. Michael Roizen, MD
Internal Medicine
One way to keep your brain strong is by, as researchers call it, "testing at your threshold." One large-scale project measured to see whether testing at your threshold was able to reverse and cause new growth of neurons and dendrites (the part of the neurons that catches information from neurotransmitters).

In the project, a computer was programmed to understand a subject's math ability. It then programmed a test so that each person stayed in line with his or her ability. Once the computer pushed the limit of each person's ability-testing at his or her threshold-researchers were able to see growth of neurons and dendrites (as judged by imaging scans of the subjects' brains).

But the best part? The people didn't need to get the answers right in order to reap the benefits. Simply testing themselves just slightly beyond their capability (80 percent correct and 20 percent wrong answers) was enough to cause the re-growth.

So for you, let's say you can always do Wednesday's crossword puzzle but barely get half of Sunday's answers. The best thing for your ego may be for you to continue to master Wednesday's, but the best thing for your brain is to keep taking a whack at Sunday's (as long as it's not so frustrating that there's no fun in doing it).

Just like an athlete becomes faster or stronger by training to attain goals that are just out of reach, you can train your brain to stay smarter and sharper.

YOU: The Owner's Manual, Updated and Expanded Edition: An Insider's Guide to the Body that Will Make You Healthier and Younger

Continue Learning about Mental Fitness & Nervous System

An Easy Trick to Strengthen Concentration
An Easy Trick to Strengthen Concentration
The TV game show Concentration ran almost without interruption from 1958 to 1991, until at last its fans became permanen...
Read More
Can playing board games keep my mind sharp?
AARPAARP
Whether you choose Risk, Pictionary, Scrabble or Boggle, board games are associated with a lower ris...
More Answers
How can chatting keep my mind sharp?
AARPAARP
Instead of popping in another movie rental, pick up the phone. Talking with someone else not only ge...
More Answers
A Little Daydreaming Can Help Your Brain Function
A Little Daydreaming Can Help Your Brain Function

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.