Your brain may not be a muscle, but there are ample ways to keep it strong throughout your lifetime. And the more positive habits you practice, the bigger the benefits. Research has found that people who started healthy behaviors like being physically active and following a healthy diet in early adulthood had better cognitive performance and healthier brain structures later in life, because these actions likely help build mental reserves and increase the brain’s resilience.

So what exactly do you need to do to help keep your gray matter in gear year after year? The formula is pretty straightforward, says Arjun V. Masurkar, MD, PhD, an associate professor in the department of neurology at NYU Grossman School of Medicine and a neurologist at NYU Langone Health in New York City. Lifestyle changes that help other parts of your body—especially your heart—will also boost your brainpower.

“Whatever’s good for the heart is also going to be good for the brain in the long term,” Dr. Masurkar says. The habits that support both don’t have to be complicated. The following six science-backed strategies can help strengthen your memory, focus, and mental stamina now—and help protect your cognitive health for years to come.

1. Give Your Brain Cardio—and Weights

“Aerobic exercise is probably the most important thing you can do to keep your brain function strong,” Dr. Masurkar says. Running, brisk walking, cycling, swimming, and other activities that elevate your heart rate strengthen your cardiovascular system and support healthy blood flow to the brain. “You want the blood flow from the heart to the brain to be as optimal as possible,” he says.

Regular physical activity across adulthood has also been linked with a larger hippocampus, the brain region central to memory. But don’t stop at cardio. A 2026 review of multiple studies found that resistance training can benefit overall cognition, executive function, working memory, and processing speed in healthy adults. In other words, the smartest training plan is one that works your muscles as well as your heart.

Your Brain Boost: At a minimum, follow the CDC’s adult physical activity recommendations: get at least 150 minutes of moderate-intensity aerobic activity or 75 minutes of vigorous activity each week—which equates to roughly 30 minutes of brisk walking five days a week or 25 minutes of running three days a week—plus two strength-training days that work all your major muscle groups.

2. Follow the MIND Diet

The positive heart-brain connection extends to what you eat. Dr. Masurkar recommends a heart-healthy diet that emphasizes healthy fats, limits unhealthy fats, and keeps calories in check. Fruits, vegetables, and whole grains fit naturally into that framework, helping support the blood vessels that supply the brain.

One eating pattern built around those foods is the MIND diet, which combines key elements of the Mediterranean and DASH (Dietary Approaches to Stop Hypertension) diets. Research has associated closer adherence to the MIND diet with slower cognitive decline. In a separate review of 21 studies, following a Mediterranean diet was associated with 11 percent lower odds of dementia overall and 27 percent lower odds of Alzheimer’s disease specifically.

Your Brain Boost: Start with simple MIND-friendly changes: add leafy greens to your meals, choose berries in place of sweets, cook with olive oil instead of butter, and eat beans and fish more often than red meat.

3. Sleep More Than Seven Hours a Night

We all know how foggy and unfocused we can feel after getting too little sleep. But when that becomes a pattern, the effects may extend well beyond the next day. A 25-year study of nearly 8,000 adults found that persistent short sleep—six hours or less a night—was associated with a 30 percent higher risk of dementia than consistently sleeping seven hours.

“Sleep is very restorative to the brain’s health in the long term,” Dr. Masurkar says. “It not only helps you feel more focused and alert, it also helps to store memories and improve function.”

Your Brain Boost: Follow the CDC’s sleep guidelines by aiming for at least seven hours of sleep each night, keeping your bedtime and wake time consistent, and turning off electronic devices at least 30 minutes before bed.

4. Avoid Smoking and Limit Alcohol

Cigarette smoke and excessive alcohol may bring up fond memories, but those habits are best left in the past for the sake of your brain. “Smoking accelerates atherosclerosis, not only in the heart, but also in the brain vessels,” Dr. Masurkar says. Smoking itself is strongly linked to brain atrophy and an increased risk of dementia and Alzheimer’s disease. As for the long-term effects of vaping, the jury’s still out, but Dr. Masurkar advises against it.

While evidence is mixed about the effects of alcohol in moderation, excessive alcohol consumption can damage nerve cells in the brain and lead to cognitive decline, while also increasing the risk of stroke.

Your Brain Boost: If you smoke, quitting is one of the most impactful steps you can take for your long-term brain health. If you drink, stay within moderate limits—no more than two drinks per day for men, according to current dietary guidelines—and consider reducing further if possible.

5. Stay Socially and Mentally Active

Keeping your brain engaged matters just as much as keeping your body moving. Social isolation and loneliness have been linked to a higher risk of cognitive decline and dementia, while maintaining strong social connections appears to be protective. Regular interaction with others—whether through friendships, community involvement, or group activities—helps keep the brain stimulated and resilient.

Mental challenges matter too. Learning new skills, reading, playing an instrument, or taking on intellectually demanding tasks all help build and maintain cognitive reserve, which is the brain’s ability to adapt and compensate as it ages.

Your Brain Boost: Make time for regular social connection, whether that’s scheduling weekly calls with friends or joining a club or class. Pair that with activities that genuinely challenge your mind—something that requires focus and learning, not just routine repetition.

6. Manage Stress and Protect Your Mental Health

Chronic stress takes a measurable toll on the brain. Prolonged exposure to cortisol, the body’s primary stress hormone, has been associated with damage to the hippocampus and impaired memory. Depression and anxiety, if left unmanaged, are also associated with increased dementia risk over time.

“Mental health and brain health are deeply interconnected,” Dr. Masurkar says. Addressing stress, anxiety, and depression—through therapy, medication, mindfulness, or a combination—is an important part of a long-term cognitive health strategy.

Your Brain Boost: Build stress-management practices into your routine. Regular exercise, adequate sleep, and social connection all help, but don’t hesitate to seek professional support if you’re struggling with persistent stress or mental health symptoms. Taking care of your mind today is one of the most effective investments you can make in your brain’s future.