The Energy Revolution: How Humans Became Metabolic Outliers in Evolution

A Harvard study reveals humans’ uniquely high metabolic rates as a key driver of our evolution, brain development, and reproductive success.

Redefining Human Energy

Humans are remarkably different from other mammals, including our closest relatives like chimpanzees, when it comes to energy use. A groundbreaking study by Harvard researchers, published in the Proceedings of the National Academy of Sciences¹, finds that humans exhibit exceptionally high metabolic rates—both at rest and during phy…