A quality box spring or a solid platform under the mattress is definitely supposed to help. I have the latter, and in a material with just a little give. It als

A quality box spring or a solid platform under the mattress is definitely supposed to help. I have the latter, and in a material with just a little give. It also keeps the bed down at couch height. Our dog with the stumpy legs thinks my bed is the best thing ever and he tries to convince everyone else in the house that they should have one just like it by hopping on my bed, making significant eye contact with them and muttering in dog trying to get them to check it out.