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Use One Genius Affordable Hack To Fix Your Sagging Mattress
By V BAWA
If some parts of the mattress sag, especially with a new mattress, the problem might be the bed frame, and you can fix this by adding some extra support underneath the mattress.
Some mattresses sag in the middle, as their bed frames only have legs on the corners, in which case, add some support in the middle, like an old piece of plywood or a wooden board.
The size of the board you use will depend on how much coverage the foundation underneath provides and how bad the sagging is.
TikTok creator @lavitex suggests placing the support in the middle around where your hips would be so it can better support the weight
of the mattress.