Scientists at the University of Pennsylvania say pheromones in male perspiration can brighten women's moods, reducing tension and increasing relaxation. Extracts from the underarms of male volunteers were applied to the upper lip of 18 women - Much to the researchers' surprise, the women reported feeling less tense and more relaxed. "This suggests that there may be much more going on in social settings like singles bars than meets the eye."  "By determining how pheromones impact mood and endocrine response, we might be able to build a better male odor" The women of the world rejoice. Link