If you’re incorporating the woman-on-top “cowgirl” position into your and your partner’s sexual regimen, you may be in danger.

According to a Brazilian study, “cowgirl” poses the biggest physical injury risk to a man when he is having sex with a woman.

The risk is that you can break your dick. In half.

The woman-on-top position during intercourse was deemed responsible for half of all penile fractures sustained during sex in cases recorded at three Brazilian hospitals, according to The Independent.

Basically, the pressure and weight of an errant penetration attempt can break your dick. And when it happens, you may allegedly actually hear a snap. How fucking horrifying is that?

The second most dangerous position is “doggy style,” and the safest bet is “missionary,” which is good news for dudes who like to gaze into their lover’s eyes while holding a planking position.