How to Support Sagging Springs in a Sofa

You sit down on the sofa and your rear end doesn't stop. It keeps going farther down until you feel like you're sitting in a hole. It's probably the springs, sagging under the focused weight. Springs don't last forever, and if you're considering replacing them, you might as well buy a new couch. However, if your couch still looks nice or you have a sentimental attachment to it, there are ways to support those weak springs without going to too much trouble.