Being cold doesn't make you sick, so why are illnesses more common in winter?

Many people across cultures grow up hearing that cold weather makes you sick. Going outside without a coat, breathing in cold air, sleeping in a chilly room, getting caught in cold rain or snow, or simply feeling chilled are often blamed for causing colds or flu.

source https://medicalxpress.com/news/2026-01-cold-doesnt-sick-illnesses-common.html