I think this study is related to two books I read this summer: Burn, by Herman Pontzer, presents his "constrained energy expenditure hypothesis," and Exercised, by Daniel E. Lieberman, discusses his "costly repair hypothesis."
Together, they try to explain why exercise can force your body to stop using its energy to destroy itself (inflammation, autoimmune diseases) and instead use its energy to restore itself (releasing antioxidants, repairing damage).
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