Four Fs (evolution)

In evolutionary biology, people often speak of the four Fs which are said to be the four basic drives or mind states that animals (including humans) are evolutionarily adapted to be good at: fighting, fleeing, feeding, and fucking, which is more technically referred to as reproduction .

The term is also used in reference to the function of the hypothalamus in the brain, which regulates the four Fs primarily through endocrine releasing hormones.^[1]

The list of four activities appears in the 1960 edition of Annual Review of Psychology,^[2] although the fourth is rendered as "sex."

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