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Poor sleep can lead to a number of serious health problems, including an increased risk for obesity, stress and even diseases like diabetes and hypertension. In the ongoing quest for better sleep, we debunk some of the top myths about sleep, plus offer tips to help you get your zzz's.

Insomnia affects about 40 per cent of Canadians on a regular basis, and sleep deprivation is having an ongoing effect on our physical and psychological health.

Poor sleep can lead to a number of serious health problems, including an increased risk for obesity, stress and even diseases like diabetes and hypertension.

Getting the right amount of sleep each night can also protect cognitive health and keep the brain years younger. A recent study found that middle-aged adults who slept less than six hours each night -- and more than eight hours -- are more likely to experience cognitive decline. This decline in brain function is equal to being four to seven years older, according to researchers. (For more information, see Smart Sleeping.)

And that's not all. People who are sleep-deprived tend to be less satisfied with their lives overall, experts say -- and getting a good night's sleep has even been associated with better longevity. (See Poor Sleep and Unhappiness and The Zoomer Report on Sleeping and Longevity.)

In the ongoing quest for better sleep, we debunk some of the top myths that can affect the quality of our sleep, according to the Cleveland Clinic.

Click through for 7 common myths about sleep.

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