1. It proves you have teeth.

Teeth are one of those universally hot physical traits—unlike putting a plate in your lip or tattooing your forehead. But seriously, every girl has approached a dude at a bar only to have him smile and reveal that he was either in a brawl yesterday, is a professional skater without dental insurance, or on meth. Prove that you at least have a good dentist, even if you are a hot skater.

2. It makes you appear friendly.

Crazy how simple that is, smiling = friendliness. But it’s true. And mysteriously, when you appear friendly, people are more likely to want to be your friend,  and you definitely want female “friends.”

3. You look hotter when you smile.

I know you don’t think you do, but I promise, you do.

4. Women will think you are smiling at them.

When women see a picture of a guy, they imagine what it would be like if he were looking at them, and if you are frowning, they imagine what it would feel like to piss you off.

5. Smiling makes you look less like a creep.

And that’s a good thing. This should actually always be your #1 priority in crafting your online dating profile. Repeat after me, “I will not look like a creep…I will not look like a creep..” Good.

Stay tuned for a post on “How Not To Look Like a Serial Killer Even If You Are.”