🧠 Sports Lastingly Change Your Brain

Here's a surprise coming from sports science: improvements in endurance don't depend solely on muscles or the heart, but also on cerebral changes that persist after the effort.

This finding appears in a study from the University of Pennsylvania, published in the journal Neuron, which examines how neuronal activity guides endurance gains. The work shows that during repeated exercise sessions, certain brain areas maintain their activity well after the effort ends, which could explain why performance evolves favorably over time.

In other words, regular sports modify certain brain structures, which then allows muscles to strengthen and recover better in a virtuous circle.


The experiment was conducted on mice running on treadmills. Scientists identified a specific group of neurons in the ventromedial hypothalamus, called SF1 neurons. These cells activate during running and retain their activity for at least an hour after stopping. This persistence seems linked to an optimized management of the body's energy, helping organs like the heart and lungs.

A striking result appears when these SF1 neurons are blocked after exercise: the mice then show no progression in endurance despite regular training. This discovery indicates that the post-exercise period is crucial for the body to benefit from the effort. Thus, the brain is not limited to coordinating movements; it actively participates in recovery and the development of physical abilities.

On a biological level, SF1 neurons might improve the use of stored glucose, allowing for more efficient recovery. This process helps muscles strengthen and the cardiovascular and respiratory systems adapt. Although the molecular details remain to be clarified, this work shows that exercise lastingly modifies certain brain circuits.

By deepening these mechanisms, it would be conceivable to create approaches to amplify the benefits of exercise.