We've all heard it: "Looks like you woke up on the wrong side of the bed this morning." And, it seems, there is truth to that statement. According to a study conducted by UK hotel chain Premier Inn, those who sleep on the left side of the bed are "more cheerful" and left-side sleepers are "more positive and capable of tackling heavy workloads and a stressful day ahead."

According to the study, which was done with 3,000 adults, "over a quarter of the people" who sleep on the left side of the bed said they have a "positive outlook on life" in contrast to 18 percent of those who sleep on the right side of the bed.

The study, which was published on WebWire.com--a website that distributes news releases, also states that those who are left-side sleepers will not switch sides with their partners.

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So, which side of the bed do you sleep on? If you are a left-side sleeper, are you more cheerful than your parter on the right side of the bed?