Changing underwear daily may seem like basic hygiene, yet many people admit they don’t always follow this rule. Experts now warn that skipping daily changes isn’t just unpleasant—it can increase the risk of irritation and infection. A 2021 study found that an average pair of underwear can contain about 0.1 grams of fecal residue, highlighting why wearing the same pair for more than a day may pose health concerns. Despite this, a 2023 Newsweek poll revealed that hygiene habits vary widely by age.