No Pressure Points
By far the biggest advantage of memory foam mattresses is their ability to eliminate pressure points. Springs push against your pressure points, like your shoulders and hips, while you sleep. Memory foam doesn’t resist body weight. It compresses and conforms around your pressure points. This results in a more even distribution of your body weight across the surface of the mattress eliminating pressure points. Memory foam users benefit from this by experiencing a better nights sleep, and little or no soreness in the morning.
Spinal Alignment
Memory foam mattresses promote better spinal alignment. When springs push against your pressure points, the shoulders and hips, it distorts the natural alignment of your spine. With no support being applied to your lower back, it forces your spine into a slight U shape. Since memory foam mattresses provide even support, it doesn’t compromise the natural alignment of your spine, allowing it to stay straight while you sleep.
No Motion Transfer
Perhaps you’ve seen the demonstration of the wine glass on one side of the bed, with a person jumping on
the other side of the bed and not a drop of wine is spilled. This is because memory foam mattresses do not transfer motion. For couples and light sleepers this is beneficial. When your partner gets out of bed during the night you will not be disturbed because their motion will not transfer to you, the sleeper.
Longevity
Most people do not realize that memory foam mattresses have excellent durability and longevity. So good in fact, that they only need to be replaced HALF as often as inner spring mattresses. This is because the foams used to make memory foam are much more durable than the springs, fiber, and foam padding in inner spring mattresses.
Hygienic
With less places for dust, dust mites, and pet dander to accumulate, memory foam mattresses are more hygienic than inner spring mattresses. The fibers of inner spring mattresses attract and accumulate germs and dust, while the absorbent properties of the materials can form mold if liquids are spilled.
I really appreciate you stating that memory foam mattresses are great for light sleepers. I’m admittedly a horrible sleeper that twists and turns a lot, and this irritates my wife every now and then. If I can find ourselves a memory foam mattress that can help me deal with all the motion transfer, I’m sure she’ll sleep much better.