Hello, it won't have much influence on the waist, but you must pay attention to the height of the pillow not to be too high to avoid discomfort to the waist. In fact, putting a cushion on the soles of your feet at night can help blood flow more smoothly. Because people usually walk with their feet during the day, their feet are far away from the heart, and it is generally difficult to flow back to the heart, so people's feet will feel bloated, so sleeping with a pillow will be more comfortable.