Definition: Men and women mate sexually. Sex appeal in the attraction we feel towards other men and women in order to have sexual intercourse.
This kind of attraction normally is produced between sexually reproductive males and females, even though lots of times doesn't have the goal of fucking immediatly. In fact, some human sexual behaviour is understood as a social activity.
Some stuff attractive to women or men can differ between cultures or regions. The facts regarding this may be determined by subcultures or just by the person's preferences.
These preferencies arouse as the result of a complex variety of genetic, psicological and cultural factors.
A woman's sex appeal for another man depends on both. A lot of the appeal of human being comes from attractiveness. This is related with the impact that the appearence of a person will have in the senses of another, specially at the beggining of a sexual relationship.