If you’ve taken a peek inside any magazine that haunts the racks at your local grocery store, you’ve probably noticed about a million tips on how to make your love life about a million times better. From Cosmo to Men’s Health, everyone has a magic position that they’re sure you and your significant other are going to love. What those publications fail to tell you is that most of the sexual positions that they think you should start using are tantamount to a minefield. One wrong step (or thrust) and you could end up in the ER with a cracked penis or exploding vagina, and nobody wants that. Before you try out your amateur trapeze act in the bedroom (or swimming pool, depending on which position you’ve got your eye on), read this list of the most dangerous sexual positions so you know what you’re getting into.

Extreme sex positions are all well and good, but the truth of the matter is, if you’re not in peak physical condition, or if you’re just not ready for the kind of sex that you’d expect to see at any Crossfit gym, just stick to what you know. No matter how much you may want to try them, the dangerous sex positions on this list aren’t for beginners.

Vote up the sex position that you think seems the most dangerous, and remember to stay safe out there.