Body Indentations – Why do They Happen and What Can You Do?

One of the most common questions I get from my customers here in Boise is: “Why do those body indentations form in my mattress and how can I get rid of them?” So I wanted to take some time today to explain body impressions in your bed and what you can do to lessen them.

Mattress Impressions

Why do Body Indentations Happen?

As I tell anyone who comes into my store, body indentations happen no matter what. They are completely natural.

I don’t want to speculate, but I’m going to guess that you weigh at least 100 pounds. And you probably sleep on your bed around 6-8 hours a night, right? Well, all that weight (did I mention you look great today?) for all that time will lead to indentations.

It might happen more quickly than you think, too. Indentations begin within 30-45 days.

Think of sleeping on a new mattress like walking around in a new pair of shoes – you’re breaking it. Shoes stretch and change to better fit your feet and your mattress indents to better accommodate your body!

Let’s Clarify Something

It’s not actually your mattress that is being indented. Most likely there is nothing at all wrong with the coils or the structure of the innerspring. It’s actually almost always the pillowtop that is conforming to your unique body shape.

You can’t flip a pillowtop, which gives you less options for redistributing the weight and pressure that is put on the materials. That’s why those materials are made to compress in order to work best with your body.

These King Size Mattresses

King size mattresses show these indents the most because there is much more space that is not used on a regular basis.

Couples who have king size mattresses usually encounter 2 types of indentations:

1. A hump in the middle. This is caused when the couple sleeps on separate sides of the bed, indenting their sides but not the middle.

2. An indent in the middle. Alternately, couples that sleep together in the middle of a bed will, obviously, see an indentation there.

Body indentations do not mean that your mattress is saggy. Sagging is caused by broken coils and age. Body impressions are not indicative of structural problems or defects, rather they are a natural part of “breaking in” a new mattress as its comfort layers settle and conform to your body.

What Can You Do?

There are a few things you can do to lessen the severity of the indentations. It does take some work on your part, however I believe it’s worth it if you will be more comfortable.


Rotate Your Mattress

You might not be able to flip your particular mattress. You can rotate it, though!

Here are my suggestions for rotating your mattress:

  • For the first 2-3 months after purchasing, rotate your mattress every 2 weeks.
  • After that, rotate it every 1-2 months.

I know, rotating your mattress can be a pain – especially that often. If you don’t think you’ll remember, try this: rotate it every time you wash your sheets!


If you sleep alone, switch sides of the bed periodically. Even if you share your bed, you can switch sides to redistribute the weight.


Sometimes, all you need is a little pick-me-up. A mattress pad can do just the trick. Mattress pads are usually machine-washable and totally replaceable. If the pillowtop is the only thing wrong with your mattress, there is no point in buying a whole new one if a mattress pad will get you back to where you need to be.


If you just can’t handle the pillowtop style anymore, try something new. Tempur Pedic’s claim-to-fame is their ability bounce back.

Come On In

My primary goal is to make you happy. If you are unsatisfied with the indentations in your mattress, I will inspect it for you and help you find the right course of action. Come on in and try out a few beds. I’m sure you will find one that suits your needs!

Find a bed that makes you feel good,