How you sleep is just as important as why you sleep. That’s because your body is a complex machine that can be easily disturbed by noise, pain or other stimuli during the sleep cycle. And one of the predominant causes of sleep disruption is painful pressure points. Although painful pressure may originate with an ongoing health issue or a recent injury, it is largely aggravated by the inability of a mattress and foundation to maintain linear and lateral support for your spine, hips, and shoulders.