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Sleep facts you may not know

Dr Karen Martin
Reviewed by Dr Karen MartinReviewed on 19.10.2023 | 2 minutes read

We have all been told sleep is important, but did you realize to what extent? Here are some shocking facts about sleep that may make you want to dive right into bed and get those recommended 7-9 hours!

Sleep is the most important thing for health

Sleep quality and quantity are more important for good health and weight loss than diet and exercise. This is because sleep impacts hormone levels linked to appetite, brain function, and exercise ability.

Sleep can boost your sex drive

Sleep impacts nearly every organ in your body and body systems, such as metabolism, immune function, and disease resistance. Getting enough good quality sleep can help protect you from heart problems and diabetes while boosting your immune system and your sex drive.

Sleep can improve your memory

While we sleep, we consolidate information into our memory so getting good quality sleep can improve our memory and our ability to learn. Without sleep, we would be unable to maintain or form new memories.

You likely need more than 6 hours

The percentage of people who can survive on 6 hours of sleep or less without impairment to their daily functioning is estimated to be less than 1 in 20 people. Most people need around 8 hours. Studies have also shown sleep deprivation can give you as much impairment to your brain function as being legally drunk. This occurs after about 17 hours without any sleep or if you sleep less than 6 hours for ten days. It is also similar to alcohol in that the more sleep-deprived you become, the less you will be aware that your brain functioning has been affected.

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This article has been written by UK-based doctors and pharmacists, so some advice may not apply to US users and some suggested treatments may not be available. For more information, please see our T&Cs.
Dr Karen Martin
Reviewed by Dr Karen Martin
Reviewed on 19.10.2023
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