The science of attraction is one that involves all five senses—your eyes, nose, ears, and even your skin can "help decide if this person does 'it' for you or not," writes Dawn Maslar, dating expert, biology professor, and author of Men Chase, Women Choose. True chemistry will likely ignite all of these senses at once, as Maslar explains for Mindbodygreen. "When people meet on a first date, they are usually looking for that 'buzz'—that feeling of 'having chemistry.'"
For men and women, this can mean different things. Men, for example, have 25% more neurons in their visual cortices, meaning they tend to place more emphasis on visual cues than women. That being said, both men and women are attracted to visual indications of health, such as clear skin, bright eyes, and shiny hair.
Your sense of smell also plays a key role in determining attraction. Women in particular can actually sense "histocompatibility complex molecules," which are airborne proteins that are indicative of a person's immune system. Both men and women respond to pheromones, or chemical substances that affect the behavior of others. Even the way a person's voice sounds can play a role in determining attraction.
"Finally, if all senses are in agreement, one moment gets the final say—the first kiss," writes Maslar. "This kiss is a mixture of smell, texture, and taste that has the ability to make or break a relationship." She cites a recent Gallup poll, which actually found that 59% of men and 66% of women had broken off a new relationship due to a lackluster first kiss. "The good news is that if someone passes the first kiss test, chances are there will be more (really good) kisses in the future."
For more, read up on an energy practitioner's 10-minute guide to manifesting true love this Valentine's Day.