The objective is to increase the support and reduce the give of a sleeping surface. This typically involves addressing components such as the mattress, foundation, and any layers affecting overall firmness. For example, placing a firm board between the mattress and the bed frame can provide increased support and reduce sagging, effectively making the sleep surface less yielding.
A firmer sleeping surface can contribute to improved spinal alignment and reduce back pain for some individuals. Historically, firmer beds were often recommended by physicians to promote proper posture during sleep. The perceived benefits include enhanced support and a decreased likelihood of sinking into the mattress, which can misalign the spine.