10/06/2026
For decades, we believed the adult brain couldn't grow new neurons. We were wrong.
Research published in Frontiers in Neuroscience by Liu and Nusslock confirms that aerobic exercise stimulates neurogenesis in the hippocampus, the brain's memory center, primarily through increased production of brain-derived neurotrophic factor, or BDNF.
BDNF is like fertilizer for your brain. It helps new neurons survive, differentiate, and integrate into existing circuits. And one of the most reliable ways to increase it is exercise. Not extreme exercise. Regular movement. Walking. Dancing. Swimming. Gardening.
Your brain isn't declining because of some inevitable biological countdown. It's declining because it's not getting what it needs: oxygen, blood flow, and the chemical signals that movement provides.
Every step you take is a vote for a sharper, more resilient brain.
You don't have to run a marathon. You have to move, consistently, in a way that makes your heart beat a little faster.
What kind of movement brings you joy? That's the one your brain needs most.
