Why do you cough more at night?
According to the Sleep Foundation, coughing generally serves the same function whether it happens at night or during the daytime – to remove mucus and foreign objects from the windpipe, voice box and lungs.
The site adds: “When you are sick, your cough might worsen at night due to postnasal drip.
“Postnasal drip refers to secretions that run down the back of the throat instead of coming out of the nose.
“This symptom often accompanies a cold, as well as the flu, allergies, and sinus infections.”
The sleep experts explained that lying on your back can worsen postnasal drip, which may be why you notice worse coughing at night.