What we dream about at night is allegedly less connected to how comfortably we sleep, and more to do with our personalities and whether we are introverted or extroverted.
A study by Best Mattress Brand looked at the sleeping patterns and dreams that introverts and extroverts experience, and has attempted to place them into separate groups.
Using the Myers-Briggs Type Indicator - which groups people as either introverts or extroverts - the company asked over 1000 Americans about their sleep to determine which dreams personality types experience the most.
Participants answered a series of questions about what goes through their heads at night and how they feel afterwards.
These questions asked how often they dreamed about their father, taking another life, travelling, flying, their friends, lovers and being naked and so on.
It also accounted for how alert and energised people felt when they were awake, how interested people were in interpreting their dreams, how lucid their dreams were and how frequently they had nightmares.
The study claims it was able to pinpoint 16 different personality types based on sleep and dreams.
They were as follows:
Dream about their father less
Dream about murdering someone less
Dream about being back at school less
Dream about flying less
Dream about travelling less
Dream about being unable to move often
Dream about travelling the least
Dream about the future the least
Dream about friends the least
Has nightmares the most
Interested in what their dreams mean
Dream about a crush or their partner the most
Dream about not wearing clothes in public the most
Dream about talking to their crush the most
Dream about flying the most
Dream about the future the most
Falls asleep when they want to stay awake the most
Dream about their crush or partner the most
Has lucid dreams the most
Remembers their dreams the least
Dreams about murdering someone the most
Satisfied with their energy during waking hours the most
Most satisfied with their feeling of alertness during waking hours