Memory foam beds aren’t what you would call a soft mattress. It molds and shapes to your body, and the contouring effect spreads the weight evenly across more of the sleeping area, thus negating any pressure points. On a common inner-spring mattress, pressure points can cause discomfort and cause you to toss and turn, so memory foam’s contouring nature allows for a better night’s sleep.
Visco foam mattresses are able to breathe because of their open cell composition. Given that the foam does not retain moisture or body heat, the bed stays comfortable at all times.
One more nice advantage of memory foam beds is that motion transfer is limited so that your movement won’t disturb your partner. It is of course much easier to get good sleep if you aren’t bothered by unwanted disturbances.