Side sleeping is often recommended to help decrease snoring and assist with positional sleep apnea. The patented arm pocket of the MedCline Relief System allows you to sleep comfortably on your side by removing pressure from your downside arm and shoulder and the Therapeutic Body Pillow provides side-sleeping support so that you are unable to roll to your back. We have heard from several customers who successfully use MedCline in conjunction with CPAP therapy. Since the stuffing of the Body Pillow is adjustable, you can create a "nest" for your mask by moving the stuffing around. Instead of putting tennis balls on your pajama shirt, try MedCline!