Add Yahoo as a preferred source to see more of our stories on Google. 3Z Brands/CNET Not all memory foam mattresses are created equally. Some are softer, while others are dense and supportive.

Poor sleep has a way of creeping into the rest of your life, affecting your mood, energy, focus, and even your health.

Figuring out what makes the best memory foam mattresses is easier said than done. Unlike shopping for the best firm mattress, a mattress meant to relieve back pain or one to appease side sleepers, ...