A sagging mattress is an unfortunate fact of life. If you're sleeping on an old-fashioned innerspring, you'll hear it in the creaking coils. If you're sleeping on a memory foam model, you'll see and feel the dips in the comfort layer. When you lie on a sagging mattress, you're sacrificing spinal alignment, pressure relief, and motion isolation.
Although the quality of the materials does make a difference, even the best mattress will start to sag as time passes. If your sagging mattress is impacting your sleep quality, and you're consistently waking up with aches and pains, then it might be time to replace your mattress.
