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Claim: Human brains evolved to need exercise

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From ScienceDaily:

UA anthropologist David Raichlen and UA psychologist Gene Alexander, who together run a research program on exercise and the brain, propose an “adaptive capacity model” for understanding, from an evolutionary neuroscience perspective, how physical activity impacts brain structure and function.

Their argument: As humans transitioned from a relatively sedentary apelike existence to a more physically demanding hunter-gatherer lifestyle, starting around 2 million years ago, we began to engage in complex foraging tasks that were simultaneously physically and mentally demanding, and that may explain how physical activity and the brain came to be so connected.

“We think our physiology evolved to respond to those increases in physical activity levels, and those physiological adaptations go from your bones and your muscles, apparently all the way to your brain,” said Raichlen, an associate professor in the UA School of Anthropology in the College of Social and Behavioral Sciences. Paper. (paywall) – David A. Raichlen, Gene E. Alexander. Adaptive Capacity: An Evolutionary Neuroscience Model Linking Exercise, Cognition, and Brain Health. Trends in Neurosciences, 2017; 40 (7): 408 DOI: 10.1016/j.tins.2017.05.001 More.

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My theory is that human brains evolved to need oxygen. Mung
I tried using the Savannah Sabertooth model to explain an observed fact about temperature and anger. Dubious, but makes slightly more sense than the above. (BTW, Savannah Sabertooth would be a great name for an exotic dancer.) polistra

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