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You can’t really “train” your brain. Here’s what you can do instead.

The best ways to protect your cognitive health might surprise you.

A lot of people are looking for ways to improve, preserve, and prolong their brain’s health. Just look at the seemingly endless amount of self-help books, podcasts, phone apps, TikToks, and Instagram Reels dedicated to the subject.

And, frankly, it makes sense. Alzheimer’s disease and dementia — conditions that fundamentally involve the loss of one’s sense of identity and sense of time and place — are distinctly terrifying compared to physical ailments. They rob a person and their loved ones of what should be a special period of their lives. After all, Americans are living longer than ever. It’s only natural that we want to be as present as we can be to enjoy it.

But despite the many promises you may hear about how to “exercise” or “train” your brain to improve your cognition long-term, there’s still a lot we don’t know. In fact, when I reached out to experts about how to exercise your brain, I received a fair amount of skepticism. Multiple studies that have used tailored tasks or games to test whether they can improve a person’s longer-term general intelligence have found negligible benefits; here’s one from 2019 and another with markedly similar results in 2025.

“It seems to be the case that no one has discovered a way to do cognitive training that transfers from the training task to anything general or interesting,” said Michael Cole, an associate professor in the Center for Molecular and Behavioral Neuroscience at Rutgers University and author of Brain Flows: How Network Dynamics Compose the Human Mind.

Still, the science of brain health has come a long way in the past 20 years, and we have better, evidence-based strategies for staying sharp as you age. There are no simple answers, but by combining frameworks from leading experts on learning, flourishing, and cognitive aging, there is a playbook. Making a point to do these things can make life right now more fulfilling — and it could also pay off as you get older.

Eat right and exercise

First things first: If you want to have a healthy brain, you should take good care of your overall health in the boring-but-effective ways you’ve heard a million times by now: Eat a healthy diet, exercise regularly, do your best to reduce stress, and try to get enough sleep.

High blood pressure is associated with a higher risk of dementia. Chronic inflammation, another modern fixation, could also play a role in cognitive decline. On the flip side, exercise does seem to be associated with cognitive benefits: One major meta-analysis of the relevant research concluded that “exercise, even light intensity, benefits general cognition, memory and executive........

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