Inside the band aid-like part is a small metal brace that works to hold the nasal passages open. This can be effective if the snoring is caused by congestion, chronically blocked nasal passages, or naturally narrow nasal passages. There are many different reasons that people snore. Being overweight can be a factor, but many times people erroneously jump to the conclusion that this is the only factor at play. Many people who are not overweight snore because of relaxed throat muscles. Other times snoring can be caused by congestion in the nasal passages and sinuses, consuming alcohol before bed, or eating a large meal before going to sleep. I've heard of programs that help you stop snoring by completing a few short minutes of breathing and throat exercises each night. I've never tried it myself, but I know of people who swear that it works. To find out more about the causes of snoring and how it can be prevented or stopped I recommend visiting the blog listed below as a source.

Source(s):
http://yourtotalhealthandwellness.blogspot.com/2009/09/how-to-stop-snoring.html