Much like your mattress, pillows are just as important to your sleep and they also collect dust mites. So, it’s really important to replace your pillows when the time calls for it and that usually is around two or three years.
But how does one know if he/she is sleeping on a dead pillow?
Apparently you can do a pillow test in the comfort of your own home. All you have to do is fold your pillow and it doesn’t spring back instantly then you will know that you have a no-good pillow and it’s time for a new one.
It’s as simple as that!
[Source]
