It’s well established that exercise substantially changes the human brain, affecting both thinking and emotions. But a sophisticated, multifaceted new study suggests that the effects may be more nuanced than many scientists previously believed. Whether you gain all of the potential cognitive and mood benefits from exercise may depend on when and how often you work out, as well as on the genetic makeup of your brain.
For the experiment, published last month in Neuroscience, researchers in the department of psychology and neuroscience at Dartmouth College in Hanover, N.H., recruited 54 adults, ages 18 to 36, from the college and the surrounding community. The volunteers were healthy but generally sedentary; none exercised regularly.
During their first visit to the lab, they completed a series of questionnaires about their health and mood, including how anxious they were both at that moment and in general.
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