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Evolutionary Biology - Doctor Ponser's Project
Doctor ponser studied thehaza, a hunter gatherer society based in northern tansinea. Women are walking like eight to nine kilometers a day and men walk like 13 kilometers a day. The hadza were doing weigh more in a day than people doctor panser had studied in industrialized societies - but they weren't burning any more calories. Doctor ponser developed a theory called constrained daily energy expenditure that suggests metabolism has a limit.