If you’re currently symptomatic, the best posture to sleep in is semi-recumbent (as in a recliner chair) with support under your neck. Some contoured pillows are good (some are terrible)—we recommend the Killapilla—or simply put a small, rolled-up towel under your neck. If you can lie flat in bed, put a pillow under your knees to help achieve a more neutral spinal posture. If on your side (avoid the “bad side”), it’s important to have just the right amount of pillow height so that your head is not tilted up or down, which will only irritate your neck joints and receptor nerves, possibly aggravating your symptoms.