Pain and discomfort serve a very important purpose in the human body. These unpleasant feelings tell you that something is wrong and your external conditions need to change. Without pain, you would risk further damaging your body and overall health. While pain can be associated with positive activities such as strenuous exercise, people should avoid it most of the time due to the stress it causes and the physical injuries associated with painful activities. If you use foam cushions for your couch, sofa, or recliner, you should feel a good mix of comfort and support when you sit down. Good foam cushions are designed to promote good posture and prevent unhealthy curvatures of the spine.