Behave: The Biology of Humans at Our Best and Worst is a 2017 non-fiction book by Robert Sapolsky.

It describes how various biological processes influence human behavior, on scales ranging from less than a second before an action to thousands of years before.

[1] Kirkus Reviews called it "An exemplary work of popular science, challenging but accessible.

"[2] A review in the Star Tribune considers Behave to be Sapolsky's magnum opus as well as "a stunning achievement and an invaluable addition to the canon of scientific literature.

"[3] In Science Magazine's edited book review blog, Behave was described as "exceptional in its scale, scope, detail, and writing style".