We're being advised to bin our underwear once a year to avoid bugs.
Research found that one in four men wear their jocks for two days without washing, while women wear the same nightclothes for two weeks.
If you are someone who does not change regularly, be warned that problems such as urinary tract affections, thrush and other allergies can develop.
The Good Housekeeping institute says we should also ditch our pillows every two years or risk things like e.coli developing.
Pillows should be binned every two years and laundered every three to six months to kill bacteria.