Written by: Dr. Katie Wadland, PT, DPT, Board-Certified Geriatric Clinical Specialist, Owner of Healthy Aging PT

As we age, it’s natural to notice changes in cognitive function—whether it’s misplacing your keys or taking longer to process information. While these changes can feel concerning, there’s plenty you can do to maintain and even improve your brain health. By focusing on building cognitive reserve, you can safeguard your mind and maintain your independence as you age. Think of cognitive reserve as a savings account for your brain. The more reserve you build, the more resilient you are to cognitive challenges.

The great news? Building cognitive fitness is possible at any stage of life, and it starts with these six proven steps.

1. Exercise for Brain Health

Exercise isn’t just for physical fitness—it’s for cognitive fitness, too! Regular physical activity stimulates neurotrophin release, enhances hippocampal neurogenesis, and improves blood flow to the brain, all of which help maintain cognitive function.

• The Science: A National Institute on Aging study found that individuals who exercise 1–4 times weekly reduce their risk of memory decline by 33%.

• Action Step: Engage in moderate-to-vigorous physical activity for at least 150 minutes weekly. Activities like brisk walking, resistance training, or swimming boost brain health and physical well-being. You can check out our list of curated exercise videos for some great (and free!) workouts you can do at home.

2. Nutrition for Cognitive Health

Your diet plays a critical role in cognitive fitness. Whole-food diets like DASH, Mediterranean, and MIND reduce inflammation and support brain function.

• The Science: According to NIH research, diets rich in fruits, vegetables, and lean proteins are linked to better cognitive outcomes and reduced risk of Alzheimer’s disease.

• Action Step: Prioritize unprocessed, whole foods. Incorporate brain-boosting foods such as leafy greens, berries, nuts, and omega-3-rich fish. For more information about evidenced-based dietary patterns that support cognitive health, I suggest checking out the Harvard School of Public Health’s ‘Nutrition Source’ page.

3. Sleep and Brain Function

Sleep is essential for brain health, supporting memory consolidation and overall cognitive function.

• The Science: Studies reveal that individuals sleeping 6–8 hours nightly maintain greater grey matter volume, which is crucial for cognitive fitness. Both insufficient and excessive sleep can harm brain health.

• Action Step: Create a sleep-friendly environment by keeping your bedroom cool, dark, and free from screens. Aim for a consistent 6–8 hours each night. For some more information, you can download this free E-Book from the NIH about Sleep for Older Adults. We keep these on hand and ready for any of our patients who need help getting their zzzz’s and it is our go-to resource.

4. Stress Management for Healthy Aging

Chronic stress can damage the brain, but reframing how we view stress makes a big difference. A positive mindset can reduce the negative impact of stress on cognitive health.

• The Science: Research shows that reframing stress reduces its physiological effects, helping maintain cognitive resilience.

• Action Step: Practice stress management techniques such as mindfulness, journaling, or meditation. Reframing challenges as opportunities for growth supports both cognitive and emotional well-being. Looking for more? The Free Mindfulness Project has an awesome library of guided meditation and mindfulness exercises available for everyone.

5. Social Connections and Brain Health

Meaningful social interactions aren’t just good for the soul—they’re essential for cognitive fitness.

• The Science: NIH studies show that loneliness increases the risk of dementia by up to 40%, while maintaining social connections helps preserve brain health.

• Action Step: Strengthen your social network by joining group activities, such as Wellness365, that combine fitness and fun with community-building. Want to hit two birds with one stone? Check out our in-person Group Fitness Classes to get your exercise in while engaging with like-minded peers for the added bonus social connection.

6. Lifelong Learning and Brain Health

Your brain thrives on novelty. Learning new skills, trying different hobbies, and exposing yourself to new experiences keep your mind sharp.

• The Science: NIH-supported studies highlight that engaging in novel activities throughout life helps maintain cognitive reserve and delay decline.

• Action Step: Get curious and commit to trying one new activity each month, whether it’s taking a class, visiting a new place, or trying a new hobby. We are lucky to live in a great area - with the city, the mountains, or the beach all with in an hours drive, there is always a new adventure you can try. Looking for something closer to home? Check out your local Senior Center and Library calendars to see if they have any lectures or workshops that might pique your interest. I’ve linked my hometown’s centers above, but check out the centers closest to you!

Building a Brain-Healthy Lifestyle

Cognitive fitness isn’t a one-time achievement; it’s a lifelong commitment. By incorporating exercise, nutrition, quality sleep, stress management, social engagement, and novelty into your routine, you can boost your cognitive reserve and maintain your independence. Through our Wellness365 program, Healthy Aging Physical Therapy provides tailored support to help you achieve these goals. Our program is always individualized to meet your needs, but can include things like supported fitness to build up your physical resilience and support your brain health, nutrition guidance to enhance your cognitive and physical wellness and education about stress management strategies to maximize your emotional balance.

Your journey to better cognitive fitness begins today. Want to take Let’s the first step together? If you live in one our service areas, we’d love to help! Check out out Wellness365 Page for more information and to get signed up today!

Learn more about Wellness365

References

1. Augusto-Oliveira, M., et al. (2023). Exercise Reshapes the Brain: Molecular, Cellular, and Structural Changes Associated with Cognitive Improvements. Molecular Neurobiology, 60(12), 6950-6974.

2. Puri, S., et al. (2023). Nutrition and Cognitive Health: A Life Course Approach. Frontiers in Public Health, 11.

3. Tai, X.Y., et al. (2022). Impact of Sleep Duration on Executive Function and Brain Structure. Communications Biology, 5(201).

4. Seward, B.L. (2017). Managing Stress: Principles and Strategies for Health and Well-Being. Jones & Bartlett Learning.

5. Sutin, A.R., et al. (2020). Loneliness and Risk of Dementia. The Journals of Gerontology: Series B, 75(7), 1414–1422.

6. Karsazi, H., et al. (2024). Which Intellectual Activities Are Related to Cognitive Reserve? Psychological Research.

7. National Institute on Aging (NIA). Brain Health and Cognitive Reserve. (Available at: https://www.nia.nih.gov)

8. Harvard Health Publishing (n.d.). Cognitive Health and Aging: How Exercise and Nutrition Protect the Brain. (Available at: https://www.health.harvard.edu)

Unlocking Cognitive Fitness: 6 Steps to Optimize Brain Health