by amc80 » Mar 23, 2015 Tucker is a side sleeper, and can roll from his back to his side. This, of course, freaks me out- he's only 8 weeks and if he was to roll onto his tummy, I doubt he'd be able to move his head to breathe. I am looking into getting a sleep positioner...but the FDA now says they shouldn't be used. Are they really that dangerous? Or are they dangerous just when used incorrectly? Keep in mind, I still use a Nap Nanny and those were recalled....but the accidents from those came from parents who were using them incorrectly (in a crib, up on a counter, etc.). Is this the same deal? Or are they actually dangerous?