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Movement & Brain

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The movement-brain relationship encompasses the profound bidirectional neurobiological connections between physical activity and cognitive function — including exercise-induced BDNF (brain-derived neurotrophic factor) upregulation that drives hippocampal neurogenesis and synaptic plasticity, cerebral blood flow increases that enhance prefrontal cortex function, exercise-induced monoamine (dopamine, serotonin, norepinephrine) release that improves mood and executive function, the reduction of neuroinflammation through IL-6 and anti-inflammatory myokine secretion from working muscle, and the mounting evidence that physical inactivity is a primary modifiable risk factor for dementia.

Role

The movement-brain relationship is the scientific finding most capable of permanently changing how people conceptualize exercise — because it reframes physical activity from a body intervention with brain side effects into a brain intervention whose most consequential effects are neurological rather than physical. The person who exercises for cardiovascular health or appearance is using exercise for a subset of its most important benefits; the person who exercises to grow new neurons, to upregulate the neurotrophic factors that support learning and memory, and to reduce the neuroinflammation that drives cognitive decline is using exercise for its primary biological purpose. Most people will exercise more consistently for brain benefits than body benefits, making this the most motivationally powerful reframe in the entire exercise science literature.

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