A hacking cough, a throbbing head, a sore throat, and a nose so stuffed it feels as if you'll never breathe free and clear again. You've got a cold -- or maybe even the flu -- and all you want to do is crawl in bed and sleep.
Until you get there. That's when you realize your symptoms are turning any chance for a solid night's rest into the impossible dream.
Person to Person
The main way that influenza viruses are thought to spread is from person to person in respiratory droplets of coughs and sneezes. (This is called "droplet spread.") This can happen when droplets from a cough or sneeze of an infected person are propelled through the air and deposited on the mouth or nose of people nearby. Influenza viruses may also be spread when a person touches respiratory droplets on another person or an object and then touches their own mouth or nose (or someone...
"It's true that many cold and flu symptoms seem to get worse at night, and they can interfere with sleep just at the critical time when your body needs rest the most," says WebMD sleep expert Michael Breus, PhD, director of TheSleepDoctor.org.
But how and why does this happen?
In addition to the pure discomfort of the symptoms themselves, Breus explains that increased mucus production, along with overall congestion, forces us to breathe through our mouth instead of our nose. When we lie down, congestion can seem worse.
Tufts University sleep expert Edwin Trayner, MD, explains that mouth breathing also irritates airways, causing us to cough more often, which in turn can also disrupt sleep.
"Plus, when we are sick our body releases certain cytokines [immune factors] into the bloodstream, some of which are mediators of sleep. So that can also have a disrupting influence," says Trayner, director of the sleep disorders center at Caritas St. Elizabeth's Medical Center in Boston and an assistant professor at Tufts University School of Medicine.
The end result, say experts, is you toss and turn all night. And even if you do fall asleep, you wake up feeling drained and tired, with cold and flu symptoms seemingly worse.
For Better Sleep, Choose Cold Drugs Wisely
Although many of us turn to cold medicines at night, they may not always help you sleep better. In fact, depending on what you choose, it might actually make things temporarily worse.
"Everybody can react to these medicines differently. For some they can bring on sleepiness, but others may find it makes them feel jittery and nervous and actually keep them from falling asleep or staying asleep," says Nicholas Popovich, PhD, professor of pharmacy administration and department head at the University of Chicago at Illinois College of Pharmacy.