Sleep Quality Vs. Sleep Quantity – Which Is More Important?

We all know how important a good night's sleep is. But what exactly is "good sleep"? Is it simply getting enough hours of sleep, or is there more to sleep than that?

It turns out there really is. Sleep quality is just as important as sleep quantity when it comes to getting a restful night’s sleep.

What Is Sleep Quality?

It refers to how well you sleep. It can be affected by how long you sleep, how often you wake up at night, how rested you feel upon waking up, and how sleepy you feel during the day.

Many factors can affect sleep quality. Some of these include:

  • Sleep environment: A quiet, dark, and cool room can help promote better sleep.
  • Sleep schedule: Sleeping and waking up at the same time daily can help improve sleep quality.
  • Sleep habits: Practicing good sleep habits, such as avoiding caffeine and alcohol before bed, can help improve sleep quality.
  • Sleep disorders: Insomnia, sleep apnea, and other sleep disorders can negatively impact sleep quality.

What Is Sleep Quantity?

Sleep quantity is the total amount of time someone spends asleep in 24 hours. This includes both time spent in bed asleep and time spent in bed awake but drowsy. The average sleep quantity for adults is 7-8 hours per day.

Which Is More Important – Sleep Quality or Sleep Quantity?

There is no straight answer when it comes to whether sleep quality or sleep quantity is more important. It depends on various factors, including age, health, lifestyle, and sleep habits.

In general, sleep quality is more important than sleep quantity. This is because the quality of your sleep directly impacts your health and well-being. Poor sleep can lead to several health problems, including obesity, heart disease, stroke, and diabetes. It can also contribute to mental health concerns like depression and anxiety.

On the other hand, sleep quantity is also essential. This is because the amount of sleep you get can significantly affect your energy levels, mood, and ability to function during the day. If you don’t get enough sleep at night, you may find concentrating, focusing, and remembering things difficult. You may also be more likely to make mistakes, have accidents, and feel irritable and cranky.

So, which is more important? The answer is that both sleep quality and sleep quantity are important. To get the most out of your slumber, aim for a good night’s sleep and a sufficient amount of sleep.

How Could Insufficient and Poor Quality Sleep Affect You?

There are things that you can try to improve both sleep quality and quantity. Below are some tips to help you get started:

  1. Establish a regular sleep schedule and try to stick to it as much as possible.
  2. Create a relaxing bedtime routine and avoid stimulating activities before bed.
  3. Keep your bedroom dark, quiet, and cool.
  4. Avoid caffeine and alcohol before bed.
  5. Exercise regularly, but not right before bed.


It is crucial to get both quality and quantity of sleep. If you are not getting enough sleep, you will not be able to function at your best. You are more likely to make some mistakes and be unable to think as clearly. On the other hand, if you are not getting quality sleep, you will also not be able to function at your best. 

Sleep Better Live Better is a trusted sleep centre in Vancouver that can help those with trouble sleeping. Schedule an appointment with Dr. Muir and her sleep team!