Falling asleep with someone after having sex is the height of romance, right? Well, not always. Both the act of sex and the act of sleep are fraught with conceivable hazards—one of which can be dealing with continuous positive airway pressure (CPAP) therapy, which is used to treat Obstructive Sleep Apnea (OSA).

OSA occurs when the throat and tongue muscles relax during sleep, blocking the airway. This leads to snoring, choking, gasping and repeated awakenings. OSA is involuntary, meaning you can't control it, and OSA happens so rapidly that you often don't even know about it. But in the morning, patients wake up exhausted and/or with a headache.

Treatment for OSA includes a continuous positive airway pressure therapy (CPAP) machine that forces air through a tube and into a mask that is worn all night long over the mouth, nose or both. "The air acts almost as if it were a splint that you would use on a broken finger to keep it straight for healing,"