We all know that every time a man gives us the once-over, he’s probably thinking about sex. But now, science can explain why men are constantly checking us out. Turns out, there’s a specific formula for their once-over. Some of it’s silly, but most of it you can easily nail.

According to Business Insider, every time a men checks out a woman, he’s performing a reproductive fitness assessment. Men were designed to look for key features in women. These features make women attractive because they are associated with good health and fertility. When men notice these features, they are subconsciously thinking, she could have my babies! Making them subconsciously, or very consciously, attracted to you.

Science has proven men to be attracted to women with these 6 features. According to the data, here’s what it takes to be “attractive:” (See above.)

This all said, there’s plenty of counter research that men are just happy to be getting laid at all. One thing’s for sure – they’re lucky to have us, just the way we are.

From: Cosmopolitan