You’ve probably heard that exercise is good for your brain. But did you know that the same squats, push-ups, and planks that build your muscles might also be building new brain cells?
It sounds almost too good to be true, but science is revealing a fascinating connection between resistance training and brain health. Every time you challenge your body with strength exercises, you’re not just sculpting your physique—you’re potentially giving your brain a powerful upgrade too.
Let’s explore how your workout routine could be one of the best investments you’ll ever make in your cognitive health.
What Is Neurogenesis?
Neurogenesis is the scientific term for the birth of new neurons (brain cells). For decades, scientists believed that we were born with all the brain cells we’d ever have, and that it was all downhill from there. Thankfully, research has proven this wrong.
Your brain has the remarkable ability to create new neurons throughout your entire life, particularly in a region called the hippocampus—the brain’s memory and learning center. This process of creating fresh brain cells is what we call neurogenesis, and it’s crucial for maintaining a sharp mind as you age.
Think of neurogenesis as your brain’s renovation project. Old, worn-out cells get replaced with new, efficient ones that help you learn faster, remember better, and adapt to new challenges.
How Squats and Push-Ups Help Your Brain
So what does lifting your body weight or doing resistance exercises have to do with growing new brain cells? The connection is more direct than you might think.
When you perform strength training exercises, several brain-boosting processes kick into gear:
Increased Blood Flow: Exercises like squats, lunges, and push-ups get your heart pumping, which means more oxygen-rich blood flows to your brain. This enhanced circulation delivers vital nutrients that support the growth and survival of new neurons.
BDNF Production: This is where the magic really happens. Physical exercise triggers the release of a protein called Brain-Derived Neurotrophic Factor (BDNF). Think of BDNF as fertilizer for your brain—it promotes the growth, maturation, and survival of new brain cells. Research suggests that both aerobic exercise and resistance training can boost BDNF levels.
Stress Hormone Regulation: Strength training helps regulate cortisol and other stress hormones. When these hormones are balanced rather than chronically elevated, your brain creates a more favorable environment for neurogenesis.
Growth Factor Release: Resistance exercises stimulate the production of IGF-1 (Insulin-like Growth Factor 1), which crosses the blood-brain barrier and supports brain cell growth and survival.
The beauty of exercises like planks, lunges, and bodyweight squats is that they require no equipment and can be done anywhere. Yet they’re powerful enough to trigger these beneficial cascades in your brain.
The Benefits of New Brain Cells
Why should you care about growing new brain cells? Because these fresh neurons are the foundation of a resilient, adaptable brain. Here’s what neurogenesis does for you:
Enhanced Memory: New neurons in the hippocampus improve your ability to form and retrieve memories. Whether you’re learning a new skill, remembering names, or recalling where you put your keys, neurogenesis plays a role.
Better Learning Capacity: Fresh brain cells make your mind more flexible and receptive to new information. They help you adapt to changing situations and pick up new concepts more easily.
Improved Mood Regulation: Studies suggest that neurogenesis is linked to emotional well-being. Low rates of new brain cell formation have been associated with depression and anxiety. By promoting neurogenesis through exercise, you may be supporting your mental health as well as your cognitive function.
Cognitive Resilience: New neurons contribute to your brain’s reserve capacity—its ability to maintain function even in the face of aging or injury. Think of it as building a cognitive cushion for your future self.
Stress Resilience: A brain that’s actively creating new cells tends to handle stress better and recover more quickly from difficult experiences.
What Harms Brain Cell Growth
Just as certain activities promote neurogenesis, others can significantly inhibit it. Being aware of these factors can help you make choices that support rather than sabotage your brain health:
Chronic Stress: While short-term stress is normal, prolonged stress floods your brain with cortisol, which can actually damage the hippocampus and suppress the formation of new neurons.
Poor Sleep: Your brain does critical maintenance work while you sleep, including processes that support neurogenesis. Chronic sleep deprivation disrupts these processes and may reduce the birth of new brain cells.
Sedentary Lifestyle: Sitting for long periods without regular physical activity is one of the biggest enemies of neurogenesis. Your brain needs movement to thrive.
Unhealthy Diet: Diets high in processed foods, sugar, and unhealthy fats can impair neurogenesis. On the flip side, foods rich in omega-3 fatty acids, antioxidants, and flavonoids support brain cell growth.
Excessive Alcohol: Heavy drinking is toxic to neurons and can significantly reduce neurogenesis, particularly in the hippocampus.
Lack of Mental Stimulation: Just as your muscles need resistance to grow, your brain needs challenges. A lack of novel experiences and learning opportunities can slow neurogenesis.
The good news? Many of these factors are within your control. Small, consistent changes can create an environment where your brain can flourish.
How to Get Started Today
Ready to start training your brain through your body? Here’s how to begin:
Start Simple: You don’t need a gym membership or fancy equipment. Begin with basic bodyweight exercises like squats, push-ups (or modified push-ups on your knees), lunges, and planks. Even 15-20 minutes three times a week can make a difference.
Focus on Form: Quality matters more than quantity. Performing exercises correctly is safer and more effective than rushing through sloppy reps.
Be Consistent: Neurogenesis responds to regular exercise over time. Think of it as a long-term investment rather than a quick fix. Aim for at least three sessions per week.
Mix It Up: Combine strength training with other forms of movement you enjoy—walking, dancing, swimming, or yoga. Variety keeps both your body and brain engaged.
Support Your Efforts: Prioritize sleep (aim for 7-9 hours), eat brain-healthy foods (think colorful vegetables, berries, fatty fish, and nuts), manage stress through meditation or deep breathing, and stay socially connected.
Progress Gradually: As you get stronger, gradually increase the challenge by adding more reps, trying more difficult variations, or incorporating light weights.
Make It Enjoyable: Find exercises you actually like. When you enjoy your workouts, you’re far more likely to stick with them long enough to reap the brain benefits.
Your Brain Will Thank You
Here’s something powerful to remember: Every squat you do, every push-up you complete, every plank you hold is sending signals to your brain that you’re investing in its future. You’re not just building muscle—you’re building a stronger, more resilient mind.
The science is clear that physical exercise, including strength training, can support neurogenesis and cognitive health. You don’t need to be an athlete or spend hours in the gym. Simple, consistent effort is what counts.
So tomorrow morning, when you drop down for those push-ups or hold that plank, know that you’re doing something extraordinary for both your body and your brain. Start small, stay consistent, and trust the process. Your future self—with a sharper memory, better mood, and healthier brain—will thank you.
Disclaimer: This article is for educational and motivational purposes only. It is not medical advice. Please consult a healthcare professional before starting any new exercise or lifestyle program.
