A mattress is an important piece of equipment, considering how much time the average person spends on one. A mattress provides support and comfort while you sleep and can help reduce back and neck strain in the process if the mattress is working properly. A mattress that is not supported properly may start sagging or showing signs of sleep indentations that can negatively affect your sleep support. Repairing these indentations is normally a simple process.
Rotate the mattress 180 degrees so the head of the mattress is now at the foot of the bed. This moves the area that has the indentation and will help it recover since you'll be sleeping on a different area of the mattress.
Flip the mattress every three months if you don't have a "no flip" mattress. This helps remove indentations and will extend the overall lifespan of the mattress.
Exchange your box spring with two smaller box springs if you have a queen-sized mattress or larger. The mattress may sag due to a lack of support in the middle. By placing two smaller box springs next to each other, you get extra support in the middle of the mattress, where indentations are likely to occur, and this helps the indented area recover.
Place a thin board between the mattress and the box spring as another way of providing extra support to the mattress.
Slide an inflatable bladder under the mattress where the indentation is and inflate it with a hand pump until the indentation is gone. The bladder will then keep that area supported. If you don't have a bladder, you can stuff the area with a pillow or towels until the indentation is gone.