| By :
Grubb Young
Quality sleep is one of the most important activities that people engage in on a daily basis. The body needs oxygen to live and food and water to survive, but the brain also needs quality sleep in order to process the day's events. Studies have been done to measure the effects of sleep deprivation, and have shown what every parent with a new baby knows: quality sleep is essential to daily function. Mattresses are often thought of in terms of comfort. The right amount of firmness or softness, the right amount of plush, and the right amount of support are the most common concerns that mattress shoppers have. But the amount of cross-motion that a mattress has is also an essential consideration. Cross-motion is the amount of movement a person feels on one side of the bed when somebody moves on the other side of the bed. Mattress commercials often use images of couples to illustrate the effects of cross-motion in a mattress, and this might cause single people to ignore cross-motion when purchasing a new mattress. However, cross-motion is not only a concern for coupled people. Consider that a beloved pet cat or dog can also create cross-motion with their movements. Too much cross-motion interrupts vital sleep. Even in small amounts, the effects can add up to sleep deprivation. The amount of cross-motion that a person can tolerate differs from individuals. If you are buying a new mattress with a partner, talk to that partner about how affected by cross-motion he or she is on a nightly basis. It might be worth spending a little more money on a mattress that has all the qualities of firmness and plush-ness you want that also minimizes cross-motion. It is possible to find a traditional coil-spring mattress that significantly reduces cross-motion. Foam padding and other materials are used by manufacturers to create mattresses that provide a superior night's sleep without interruption from discomfort or movements. However, memory foam mattresses have a proven track record of being superior in reducing cross-motion. Memory foam, also often called temperature-responsive foam, reduces cross-motion without special engineering. This is because memory foam was originally designed by NASA scientists to absorb energy instead of transferring it. Because memory foam mattresses are very dense, yet viscous, movement on one side of the bed does not create a wave effect on the other side. For the same reason, memory foam mattresses are very difficult to bounce on-- they simply absorb the energy and do not transfer it by bouncing back in a springy fashion. Some people prefer traditional coil-spring mattresses to memory foam mattresses for their own comfort reasons. Still, cross-motion is a concern. Many mattress manufacturers now offer coil-spring mattresses that are padded with memory foam to help reduce cross-motion while still offering traditional spring mattress support.
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