2. You can transfer microbes to other clothes.
Putting pajamas in the washing machine can spread the bacteria from them to all other items in the wash. If you wear pajamas for 2 weeks straight, most microorganisms cannot be removed by washing, and they transfer to other clothing that comes into contact with the skin.
3. affect sleep quality.
Just like freshly laundered sheets can relax you, sleeping in clean pajamas can help you feel refreshed. Climbing into bed in sweaty pajamas can make you feel itchy at night.