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neurosciencenews:

Vigorous Exercise Boosts Neurotransmitters and May Help Restore Mental Health

People who exercise have better mental fitness, and a new imaging study from UC Davis Health System shows why. Intense exercise increases levels of two common neurotransmitters — glutamate and gamma-aminobutyric acid, or GABA — that are responsible for chemical messaging within the brain.

The research is in Journal of Neuroscience. (full access paywall)