The most common dreams and what they mean, according to research

What are typical dreams?

Typical dreams are themes that turn up in the dreams of a huge number of people, regardless of age, country or culture. They aren't identical dreams but scenes built around the same core: running away, falling, being exposed, not making it in time.

The landmark study came out in 2003. Tore Nielsen, Antonio Zadra and their team asked 1,181 first-year university students in three Canadian cities to fill out a questionnaire listing 55 themes and to check off the ones they had ever dreamed. The same questionnaire has since been used in other countries, and the list of most common themes looks fairly similar from place to place.

The list: the themes that come up most

In the Canadian study, the most frequently reported themes were being chased or pursued (about 82 percent had dreamed it at least once), sexual experiences (around 77 percent) and falling (around 74 percent). Next came school, teachers and studying (about 67 percent) and arriving too late (about 60 percent). Flying showed up for nearly half the students.

Studies of students in Germany, led by Michael Schredl in 2004, and in Hong Kong, by Calvin Kai-Ching Yu in 2008, found a similar order: being chased, falling and school sit near the top of all three lists. Other themes, like losing teeth, being naked in public or failing an exam, are common too, just a bit further down.

An important caveat: "ever" isn't "often"

Those percentages count how many people have had a dream at least once in their lives, not how many nights they have it. When researchers go through dream diaries night by night, typical dreams turn out to be fairly rare. Psychologist G. William Domhoff pulled together data like this: in nearly a thousand dream reports from California college students, flying appeared in only about 0.5 percent.

So why do they feel so common? Because they're memorable. They're intense, they often wake us up, and they hang around all day. If you have one now and then, you're in good company. If one keeps coming back, it's worth paying attention to.

Dreams of being chased

This is the most frequent typical dream in almost every study. Someone or something is coming after you, sometimes faceless, and you can't quite get away. A common reading links it to something you're avoiding in waking life: a conversation you keep putting off, a debt, a feeling you don't want to look at.

Some researchers, such as Antti Revonsuo, have proposed that dreaming about threats may be an ancient way of rehearsing how to respond to danger. Whatever the explanation, a good question to ask when you wake up is what's been chasing you lately, and what would happen if you turned around. You'll find more versions of this dream in the dictionary.

Falling dreams

Dreaming that you're falling is often tied to losing control or support: a job change, a shaky relationship, the sense that something is slipping away. In a 2018 study of 210 students, falling dreams were in fact linked to higher emotional distress, so they can be a sign you're under pressure.

Don't confuse them with the jolt you sometimes feel right as you drift off, as if you'd missed a step. Those jerks at sleep onset are normal and very common, and they have nothing to do with interpreting a dream.

Teeth falling out

Few dreams are as unsettling as feeling your teeth loosen or crumble in your mouth. Folk belief links them to bad news, but there's no evidence at all that they foretell a death or an illness.

What has been studied is something else. In 2018, Nirit Rozen and Nirit Soffer-Dudek found that these dreams were linked to tension in the teeth, gums or jaw on waking, and not to emotional distress. It's a preliminary study, but it points to something practical: if you often dream about teeth and wake up with a tired jaw, you may be clenching or grinding at night, and it's worth mentioning to your dentist. Otherwise, the symbolic reading is still on the table: how you come across to others, or the fear of losing something.

Exams, school and running late

Dreaming that you're back in school, facing an exam you didn't study for, or arriving late after everything has started is extremely common, even decades after graduation. It tends to show up when you feel judged or stretched too thin.

A study by Isabelle Arnulf and her team, published in 2014, asked medical students in France about their dreams on the night before a high-stakes exam. Of the 719 who responded, about 60 percent had dreamed about the exam, and in nearly eight out of ten of those dreams something went wrong, mostly being late or forgetting the answers. The surprising part: dreaming about the exam was linked to a slightly better score. The dream didn't predict anything, but it may have reflected how seriously they were taking it.

Flying and being naked

Flying is one of the few typical dreams that usually feels good. Many people experience it as freedom, relief or a sense of rising above whatever weighs on them. Sometimes the flight is a struggle or keeps getting cut short, and then it's worth asking what's holding you back. It's also a common dream among people who have lucid dreams.

Being naked or underdressed in public, on the other hand, tends to bring embarrassment: the feeling of being exposed, afraid that people will see something you'd rather keep private. A detail many people notice is that, in the dream, nobody else seems to care. Sometimes the fear of being judged is bigger than any actual judgment.

What to do when you have one of these dreams

A typical dream isn't a coded message that reads the same for everyone. The same theme can mean different things depending on where you are in life, and the key is almost always the feeling. These steps will get you started in the morning:

• Write the dream down as soon as you wake, with whatever details you remember: where you were, who was there, how it ended.
• Note the main feeling: fear, embarrassment, rush, relief. That feeling is your best clue.
• Ask yourself where you've felt something similar in the past few days.
• Notice whether it repeats. A typical dream that keeps coming back usually travels with a worry that hasn't gone away.
• If you have frequent nightmares that cost you sleep or leave you afraid to go to bed, talk to a doctor or therapist. There are treatments that work well.