1. Be Financially Stable
I am not saying you need to be a millionaire (although that does help!). I'm saying be financially stable and think about your future. You must be able to manage your money and be smart with how you spend it.
Invest and don't spend your money on things that will create debt. Having a high Money IQ will show her that you can be independent and provide for yourself...now that's sexy in her eyes!
2. Grow a Beard
A recent study published in the Journal of Evolutionary Biology, states that women are more attracted to men with beards[1]. Why might this be? Having a beard is associated with being older, more masculine, socially dominant, and having an aggressive look.
It's important to note that the beard should have a "heavy stubble". Don't think growing your beard down to your belly button is sexy!
3. Have Big Muscles
Fellas, get in the gym. Studies show that women are more willing to have short-term relations with muscular males and associate (emotional closeness and trustworthiness) with long-term males[2]. As a result, muscular men have more sexual partners[2].
Having big muscles shows dominance. Men are intimidated by dominance and women are attracted to it. For instance, deep voices. Women think having a deep voice is attractive while men believe it is intimidating.
"Male competition has given rise to male traits like strong muscles, deep voices, and facial hair. Men evolved these traits not so much because women find them sexy, but more because other men find them intimidating."[2]
4. Be a Good Guy (Don't Be a Jerk)
Be confident, show humility, always tell the truth, and do the right thing. Personality, treating others with respect and having a charming attitude go a long way.
"Part of physical attraction really is subjective. It is "in the eye of the beholder." Furthermore, that subjective eye of physical attraction is easily influenced by your personality."[3]
Physical appearance is not the only aspect that makes one attractive. Our personalities and how we treat others can heavily influence how people see us.
5. Get a Dog
Being a dog owner will make you look more attractive to potential lovers. But don't just get a dog because you want to find a mate, getting a dog (or animal) makes you more responsible as a person and women will find you as more caring and supportive.
"Dogs enhance human attractiveness. Scientists have known for some time that people are more attentive to and socially engaged with those accompanied by a dog than those who are not."[6]
6. Learn an Instrument
Pick up an instrument! Musicians are rated as more attractive than non-musicians[7]. The best instrument to pick up? Guitar. Research has found that women are more attracted to men if they are holding a guitar. Why does playing an instrument make you more attractive? Aside from an evolutionary standpoint, it shows women that you're intellectual and have the perseverance to learn an instrument.
7. Posture (Stand Up Straight, Head Up)
Stand up straight! Good posture leads to sex appeal. People with good posture are perceived as more confident, successful, and attractive[8]. When walking, keep your chin up, shoulders back, and stand up straight.
Before any meeting, presentation, or simply going out in public, make sure your shoulders are relaxed and your spine is in alignment. Feeling more attractive and confident in yourself is easy when you pay close attention to your posture.
8. Have a Positive Attitude
Be happy! Happiness is the most attractive quality one can have. You must have the attitude that you determine your own happiness and you are in control of your life. When you have this mindset, you're portraying that you're independent and can withstand life's inevitable obstacles. Seeking happiness through other people will make you look more insecure, needy, and reliant on the other person.
The happier you are, the more confident you are
Smiling makes you more approachable
A happy person is sexy
9. Surround Yourself with People
Be with your friends! The more friends you have, the more popular you'll look to the opposite sex. It also shows that you're able to get along with people and have a personality that others like to be around.
Bonus
Research suggests that surrounding yourself with attractive people will make you more attractive because our brains average out the faces in the group, which makes everyone appear more attractive[9].