Growing New Brain Cells
For a long time, scientists believed that the brain could not grow new cells after childhood, but research has proven that wrong. Exercise triggers the release of a protein called BDNF, which stands for brain-derived neurotrophic factor. BDNF acts like fertilizer for your brain, helping new brain cells grow and existing cells form stronger connections. This growth happens especially in the hippocampus, a part of the brain shaped like a seahorse that controls learning and memory. The more you exercise, the more BDNF your brain produces, which means better memory and faster learning.
Multiple studies have shown that children who exercise regularly perform better in school. Kids who are physically active tend to score higher on tests of attention, memory, and academic achievement compared to less active classmates. Just 20 minutes of aerobic exercise, like running or jumping rope, before a test can improve your performance significantly. Some schools have added physical activity breaks during the school day and seen their students’ grades go up. The American Academy of Pediatrics recommends that schools include physical activity breaks throughout the day to help students learn better.
How Exercise Boosts Your Mood
Have you ever noticed that you feel happier after playing outside or going for a run? That is because exercise causes your brain to release special chemicals called neurotransmitters. Three of the most important ones are serotonin, dopamine, and norepinephrine, which work together to regulate your mood and emotions. Serotonin helps you feel calm and content, dopamine creates feelings of reward and pleasure, and norepinephrine helps you feel alert and focused. Regular exercise has been shown to reduce symptoms of depression and anxiety in both children and adults.
Exercise and Focus
Staying focused in class or while doing homework can be hard, but exercise can make it easier. Research has shown that regular physical activity can reduce symptoms of ADHD, such as difficulty paying attention and acting impulsively, almost as effectively as medication in some children. Exercise increases the levels of dopamine and norepinephrine in the brain, which are the same chemicals that ADHD medications target. Even for kids without ADHD, a quick burst of activity like a brisk walk or a set of jumping jacks can sharpen concentration for the next one to two hours. That is why many teachers have started adding movement breaks to their classroom routines.
What Kinds of Exercise Help Most
Almost any type of physical activity benefits your brain, but some types seem to be especially helpful. Aerobic exercises like running, swimming, dancing, and cycling are the best at increasing blood flow to the brain and boosting BDNF production. Activities that require coordination, like martial arts, gymnastics, or team sports, challenge your brain to process complex movements and make quick decisions. Even simple activities like walking have measurable brain benefits when done regularly. Experts recommend that children get at least 60 minutes of moderate to vigorous physical activity every day for the best brain and body health.
Building a Brain-Healthy Habit
The brain benefits of exercise are strongest when physical activity becomes a regular part of your life, not just something you do once in a while. Try to find activities you genuinely enjoy, because you are much more likely to stick with something that feels fun. Exercising with friends or family makes it more enjoyable and helps you stay consistent. You do not need fancy equipment or a gym membership — playing tag, riding a bike, or dancing to your favorite music all count. Moving your body every day helps your brain just as much as it helps your muscles.
Sleep, Exercise, and the Brain
Exercise and sleep work together to keep your brain in top shape. Physical activity during the day helps you fall asleep faster and sleep more deeply at night. During deep sleep, your brain processes everything you learned during the day and moves important information from short-term to long-term memory. Studies show that children who are physically active during the day get better quality sleep than those who are sedentary. However, exercising too close to bedtime can make it harder to fall asleep, so try to finish vigorous activity at least one to two hours before you go to bed.
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