Developed in the 1960s, memory foam has become a popular component in mattresses. Memory foam is soft, isolates motion and molds to your body in response to pressure and warmth. Memory foam has a variety of benefits and disadvantages. http://www.sleepjunkie.org/find-your-best-mattress-the-top-10-and-worst-10-beds-of-2015/ The Good Side Quantifying if sleeping on memory foam results in a better night’s sleep can be a difficult thing to do. Anecdotal evidence though is glowing. Many people say they sleep well on memory foam and enjoy going to bed at night. Still, memory foam relieves painful pressure points by softening to the exact shape of your body while providing consistent support and dispersing your weight.This soft support can also be a good option for people who suffer from back pain, instead of the old standby of a firm mattress that doesn’t have much give. For light sleepers, memory foam’s ability to isolate motion from a partner and mold to any sleeping position can be a godsend. The Bad Side Traditional memory foam tends to retain body heat, which can be nice during cooler months and uncomfortable during summer.Manufacturers have since developed gel-infused memory foam that has a looser cell structure and stays cooler. Like most mattresses, memory foam goes through a process of emitting chemicals called offgassing.You should let the mattress air out for at least 24 hours before making the bed. If the smell is especially bothersome, you can improve the offgassing process by heating up your house, turning a fan and opening a window for better ventilation.