A single sweaty workout may boost some people’s memory
Variation among people may hold clues to how fitness affects the mind
![older man exercising](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/03/032519_LS_exercise-brain_feat.jpg?fit=860%2C460&ssl=1)
BRAIN BOOST? Older people’s brain responses to a single bout of exercise mirrored their responses to three months of training, a new study finds.
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