If like me you have had guests staying over for the holidays, kids back from Uni you will have had mountains of bedding to wash and sort out and store, so it’s a timely moment to see if you need new pillows which are so cheap to buy you might as well throw out the old ones and replenish, the ultimate test to find out if you need new pillows is to fold the pillow in half and if it doesn’t spring back into shape  then it’s probably past its sell by date if in doubt throw it out and a good night’s sleep should not be compromised.