Sexual fitness is the physical and psychological efficacy of a living organism to maximize and sustain its reproductive prospects. It is the intersection of human physiology, biology, behavior, and socio-cultural spheres, and represents an ancient, evolutionary imperative and evolutionary adaptation. By recognizing the pathways of pleasure, reward, mating strategies, courtship rituals, and cultural taboos, sexual fitness provides an adaptive advantage to an organism and its progeny, empowering them to succeed in the ongoing reproductive free-for-all.

See also: sexual arousal, peak experience, brain stem, flow genome project, peak performance