I guess the idea is that your head is sideways facing downward somewhat along the slope of the pillow, either to the left or the right. The downward slope uses gravity to keep the tongue forward, thereby preventing it from interfering with breathing. Sometimes it works, sometimes it doesn't. Snoring doesn't always seem to originate from the same location, from what little I understand of it. My "review" is still under review and may be updated later, if that's possible here. The literature asks for 30 days and it has been a week short of that. In addition, sometimes the pillow is just not comfortable enough to sleep on so I will use another. It's a bit too firm for my liking. Maybe that's needed to maintain support for the posture it imposes on the user. It's uncomfortable, and after a long period of time, begins to feel "hard." If it was the perfect solution to snoring, the discomfort would be a small price to pay. As it is not the perfect solution, for me, if I can't get accustomed to it, and if it doesn't work more consistently, it will just be one more thing to interfere with my already sketchy sleep. Time will tell.