Why Exercise Is One of the Best Things You Can Do for Your Brain

As we get older, things like memory, focus, and mental sharpness slowly decline. Most people think exercise is just for fat loss or muscle; however, one of the biggest benefits is actually your brain!

What Exercise Actually Does for Your Brain

Improved Blood Flow to the Brain

• Exercise helps deliver more oxygen and nutrients by increasing blood flow to the brain through two main mechanisms: improving circulation and promoting the formation of new blood vessels. This helps keep your brain functioning at a high level.

• The formation of new blood vessels and improved blood flow also creates a favorable environment for a protein called Brain-Derived Neurotrophic Factor (BDNF), often referred to as “fertilizer for the brain.”

Helps with Memory and Learning

• Exercise promotes the creation of new neurons and nerve connections in the hippocampus, the part of the brain heavily involved in memory and learning. This process is known as adult neurogenesis.

• BDNF plays a major role in supporting this process by helping neurons grow, survive, and communicate more effectively.

Reduces “Brain Inflammation”

• Chronic stress and aging can cause inflammation that affects how your brain functions.

• Exercise helps regulate this by improving circulation, supporting the brain’s waste-clearance systems, and helping move metabolic byproducts through the bloodstream and cerebrospinal fluid (the fluid that cushions the brain and helps clear waste products).

Lowers Risk of Dementia and Cognitive Decline

• People who stay active have a significantly lower risk of cognitive decline and neurodegenerative diseases, including Alzheimer’s disease, partly through the mechanisms mentioned above.

Resistance training strengthens muscle and improves the connection between your brain and muscles, helping you produce force more efficiently. Endurance training improves circulation by increasing blood vessel density, which enhances the delivery of oxygen and nutrients to your muscles and nervous system. Together, they improve both how your body produces force and how it delivers and maintains energy—leading to better performance, health, and longevity. That is why we do both weight training and conditioning!

Takeaway

Even if we do the right things at the gym, it doesn’t have to end there! Going for brisk-paced walks, hiking, biking, or mixing running with walking can provide additional benefits by increasing the total amount of time your body and brain spend moving, circulating blood, and stimulating these protective processes.

The goal is not just to exercise hard occasionally, but to consistently give your brain and body movement throughout the week. Over time, those small habits can have a major impact on long-term health, energy, performance, and cognitive function! 

And while BDNF was mentioned briefly here, it deserves an article of its own. Its role in learning, recovery, mood, and long-term brain health is fascinating, and we’ll dive deeper into it in a future write-up.