E. E. Hill et al. “Exercise and Circulating Cortisol Levels: The Intensity Threshold Effect,” J. Endocrinol. Invest. 31, № 7 (July 2008): 587–591.
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D. E. Lieberman. “Is Exercise Really Medicine? An Evolutionary Perspective,” Curr. Sports Med. Rep. 14, № 4 (July-August 2015): 313–19; см. также D. E. Lieberman. The Story of the Human Body: Evolution, Health, and Disease (New York: Pantheon, 2013).
