It's easy to think that because we aren't out sweating in our pajamas all day that we should be able to wear them a few nights in a row.
I know I'm guilty of this! According to Lifebuzz, on average, men wait up to 13 days before grabbing a new pair, while women usually put it off for up to 17 days. If wearing PJs for multiple days (or weeks!) is so common, why should we bother changing now? Well, because it's totally unsanitary for these eight reasons that will have you grabbing a fresh outfit every night.
1. Pajamas are not clean just because you're not sweating profusely in them.
Sally Bloomfield, professor at the London School of Hygiene & Tropical Medicine said, "Pajamas are against your skin. They are full of microorganisms. We all have skin and gut organisms that are usually not harmful on our skin and in our gut. But if they get into the wrong place they can cause problems."
2. If you sleep without underwear, you're at higher risk for spreading bacteria.
"We all carry E Coli bacteria in our bowel. Again, most strains are not harmful," she adds. "But if they get into the urinary tract they can cause infection. That would cause cystitis (a urinary tract infection)."
3. You get way more pimples. Bacteria, dead skin cells, and oils build up over time while wearing dirty clothes, causing outbreaks of acne.
4. Dust mites are all over your bed, which means they're on your pajamas, too. Dust mite feces can cause severe allergies, and that's not what we want when we're trying to catch some ZZZs.
5. You might smell worse during the day. Even if you're showering every day, you're still getting back into dirty clothes. You do still sweat some while sleeping, and you're creating more buildup on your skin.
6. Dirty PJs make it more difficult to fall asleep. If your skin is oily and itchy from all the grime, you might find yourself awake longer each night.
7. Allergies aren't always based on what's in the air. In addition to attracting dust mites, unsanitary pajamas can make existing allergies to dust or pollen worse.
8. If you're getting enough sleep, you're not wearing them for "just a couple of hours." The buildup of six to eight hours' worth of dirt and grime for over two weeks is huge. This is just another way of rationalizing this gross habit.