Rolling to the middle of a sagging mattress is no fun. A mattress with a noticeable dip typically occurs when the mattress becomes compressed and lower than the rest of the surface by continually supporting the occupant's weight. Sagging mattresses don't provide adequate back support and often put your back into an unnatural position. A non-supportive mattress can also contribute to low back pain. Preventive maintenance and proper care for your mattress helps avoid a dipping or sagging mattress.
Rotate your mattress to minimize wear in the same spot. Turn a new mattress every two weeks in the first three months and once every two months thereafter. Turn your mattress by rotating it head to foot. Flip it over if it is a double-sided mattress. Some mattresses, such as pillow-tops aren't designed to flip.
Don't let children use your bed as a trampoline. Roughhousing can damage a mattress.
Use a bed frame that has a center support to prevent bowing or breakage. This is especially important for larger beds, such as king- or queen-size sets.
Place a board, such as a piece of plywood under a sagging mattress to help support the dip. Place a section of memory foam topper on top of the mattress to better conform to your body. If a mattress is sagging, it is already damaged and needs replacing. Repairs for sagging mattresses are only meant as a short-term fix.