Sleeping with a pillow between your legs has several benefits, especially for side sleepers. Ergonomically-designed pillows, often in a butterfly shape, conform to the space between your knees and alleviate pain in the lower back, hips, and knees. The leg wedge pillow acts as an extra cushion, supporting the alignment of your spine and reducing pressure on your joints. Additionally, sleeping with a knee wedge can also improve circulation by reducing the strain on the blood vessels in your legs. Lastly, sleeping with a pillow between your knees can improve the quality of your sleep by encouraging a more comfortable and relaxed position. Overall, incorporating this simple practice into your nightly routine may help improve your physical comfort and enhance your overall sleep experience.