Human’s sex appeal is a complex notion of mutually dependent biological, psychological, and socio-cultural factors. Thus, sexual attractiveness is formed by all the above components and studied from these perspectives. The biological beauty has always been under consideration; yet, the universal formula of attractiveness is still not found. At the present stage, scholars agree that the standards of biological beauty are formed by evolutionary as well as psychological and socio-cultural factors (Geary 58). This assumption leads to the statement that biological beauty is objective and subjective simultaneously. A female finds a male to be attractive due to the principles of natural selection (that are frequently subconscious) as well as due to non-biological factors. Humans choose mates after considering some traits and decoding them as the signals of good physical health, possibility to transfer the genes to the next generation, and augur well in sexual relations that are not aimed at reproducing. Merely biological factors of attraction that are under consideration are the general form of a body, pelage, and smile as they can hint onto a male’s genome and health. The first physical trait to be assessed in males is the general visual perception of a figure where WHR is included. The V-silhouette (broad shoulders and chest with thinner waist and hips) combined with natural muscular fit is considered to be more sexually attractive than other possible variations. The V-silhouette is formed by the correct balance of hormones in the male’s organism where testosterone prevails. The male hormone is responsible for the skeletal system formation. The secondary sexual traits such as the pelvis and stomach are not so developed as in a female’s organism since they are not intended for pregnancy or giving birth. The same situation is with the muscles and fat concentration in the organism. The V-silhouette helps males in advertising being the most obvious trait that can be recognized by females from far distances if to compare with voice timbre and scent. The general corporal structure can help in competing for a partner as it is a good health indicator. The studies prove that people with the ideal waist-hip ratio are less vulnerable to obesity, cardiovascular diseases, and carcinogens (Howard 111-112). The second attractive masculine feature is pelage. The quantity of hair on the body depends on the level of testosterone too. Pelage does not play an outstanding role in conceiving but there is a tendency that males with higher testosterone level possess higher libido. For example, Spanish, Italian, or Georgian men are known as more passionate lovers than Swedish and Greeks. Sexual fulfillment plays an important role in the psychological and physical health of both sexes. Sexual satisfaction is not a rudiment but a new rare acquirement in the evolutionary course. As the nature gives something new to enlarge the chances to survive and develop, it can be suggested that a high libido level may be a step toward the next stage of development. Beardies are on trend today. Maybe, it is more than just a coincidence in the present-day sexual morphism fashion. Pelage gives the impression of a young but mature male as opposed to a hairless woman or even a child who needs protection and taking care of him. The third attribute is the most difficult to explain in terms of biological selection. A man looks more appealing when he has an open smile. Nigel Barber states that the facial features that women rate as attractive include a large smile area that combined with the other aspects appears to be a good indicator of genetic variability (which is important for disease resistance (Barber 395-424). Also, the theory of symmetry works on this example. The individuals with more symmetrical proportions are considered to possess better genetic background, health, IQ, and attraction level (Furlow, et al. 823-829). Therefore, the state of oral cavity can represent the genetic background along with personal traits of a male. Such personal traits as the level of intellect and tidiness determine other ranges of male’s attractiveness and position in the social groups (from family to nation) that is important not only in the reproduction but also the whole course of raising the offspring. In conclusion, it can be stated that behind personal preferences in mate selection some objective evolutionary reasons can be found. The three most outstanding biological features of males under consideration demonstrate unconscious reasons in choosing a mate that are not influenced by any psychological or socio-cultural background. The ideal figure standards and the level of pelage depend on the testosterone level and the general health condition. The better genome gives the better chances for the next generations. The smile form of a male is a component of genetic variability that influences diseases resistance and indicates other non-biological factors that are important both for the reproduction process and taking care of the decedents. Thus, only the V-silhouette can be used as the means of intrasexual competition by humans. The pelage level and the smile shape are considered to be the facilities used in the process of intersexual choice.

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