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Why do we Sleep?

Updated: Mar 11, 2023

While we don’t often think about the reasons why we sleep, we can generally accept that it makes us feel rejuvenated. Sleep give us more energy, makes us feel invigorated and ensures we have enough rest that our mind and body can function optimally the next day. The simple facts that we feel better when we sleep and feel worse when we don’t are just the basics in understanding the reasons why we sleep.

Most adults need between 7-9 hours of sleep per night. If you don’t get enough sleep this can lead to major health consequences such as impaired cognitive function, obesity, type 2 diabetes, high blood pressure, heart disease, stroke can also have a negative impact on our mental health.

Getting enough sleep allows your mind to enter REM (Rapid Eye Movement). This is the phase of sleep is where you dream and it’s important because it allows the mind to refresh and empty all the negative thoughts you accumulated throughout the day. This allows you to wake up the next day with a clear head, not worrying about your previous problems.

Helpful advice on how to sleep better:

  • Reduce using electric devices 2 hours before bed

  • Don’t consume caffeine late in the day (up to 6hours before sleep can significantly worsen your sleep)

  • Try to keep to a sleeping schedule (going to bed and waking up at a consistent time)

  • Set your bedroom temperature right (open your windows if needed)

  • Optimise your bedroom environment (noise, external light and furniture arrangement)

  • Take a relaxing bath or shower

  • Avoid exercising before bed time

  • Avoid eating soon before bed time

  • Limit daytime naps

  • Clear your mind (listen to some relaxing music, read something light or do breathing exercises)


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