
Sleep is an essential part of a healthy lifestyle, but how much sleep do we need? While there is no one-size-fits-all approach, research suggests that adults should aim for 7-9 hours of sleep per night. Sleeping fewer than 7 hours a night may have negative health consequences, while sleeping more than 9 hours may be beneficial for young adults, those recovering from sleep deprivation, and people who are unwell. Individual sleep needs are influenced by a variety of factors, including genetics, behaviour, medical history, and environment.
| Characteristics | Values |
|---|---|
| Recommended amount of sleep for adults | 7-9 hours |
| Recommended amount of sleep for young adults | More than 9 hours |
| Recommended amount of sleep for people recovering from sleep debt | More than 9 hours |
| Recommended amount of sleep for people who are ill | More than 9 hours |
| Minimum amount of sleep needed to function | 6 hours |
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What You'll Learn
- The recommended amount of sleep for healthy adults is 7-9 hours per night
- Sleeping more than 9 hours per night may be appropriate for young adults, people recovering from sleep debt, and those with illnesses
- The amount of sleep we need varies throughout our lives
- Individual variability in sleep need is influenced by genetic, behavioural, medical, and environmental factors
- It is a myth that you can train your body to need fewer than 7 hours of sleep

The recommended amount of sleep for healthy adults is 7-9 hours per night
For example, young adults, people recovering from sleep debt, and those with illnesses may benefit from sleeping more than 9 hours per night. On the other hand, adults who sleep less than 7 hours a night may experience more health issues than those who get the recommended amount.
It's also worth noting that while some people might claim to function well with less sleep, scientists believe it's more likely that they have simply become accustomed to the negative effects of reduced sleep.
To promote optimal health, it's essential to prioritise sleep and aim for the recommended 7-9 hours per night. If you're concerned about your sleep duration or quality, it's always best to consult with a healthcare professional.
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Sleeping more than 9 hours per night may be appropriate for young adults, people recovering from sleep debt, and those with illnesses
While the recommended amount of sleep for healthy adults is between 7 and 9 hours per night, there are some circumstances in which sleeping for longer than 9 hours may be appropriate.
For young adults, sleeping for longer than 9 hours may be beneficial. This is because younger people tend to need more sleep than older adults. Research also suggests that sleeping for longer than 9 hours can be helpful for those who are recovering from sleep deprivation or sleep debt. This is because a lack of sleep can accumulate over time, resulting in a 'sleep debt' that needs to be repaid. Finally, individuals with illnesses may also benefit from sleeping for longer than 9 hours. This is because illness can cause fatigue and a greater need for sleep.
It is important to note that the amount of sleep a person needs can vary due to genetic, behavioural, medical, and environmental factors. While sleeping for longer than 9 hours may be appropriate in certain circumstances, for others it is uncertain whether this is associated with health risks. People who are concerned about the amount of sleep they are getting should consult their healthcare provider.
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The amount of sleep we need varies throughout our lives
There is no one-size-fits-all approach to sleep, and individual variability is influenced by genetic, behavioural, medical, and environmental factors. However, it is rare for anyone to need fewer than six hours of sleep to function. While some people might claim to feel fine with limited sleep, scientists believe it is more likely that they are used to the negative effects of reduced sleep.
The American Academy of Sleep Medicine and Sleep Research Society recommend that adults obtain seven or more hours of sleep per night on a regular basis to promote optimal health. This is supported by the US Department of Health and Human Services, which created a Sleep Health Objective to increase the proportion of adults who get sufficient sleep.
The amount of sleep children need depends on their age.
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Individual variability in sleep need is influenced by genetic, behavioural, medical, and environmental factors
While the general recommendation for adults is to obtain seven or more hours of sleep per night, individual variability in sleep needs is influenced by genetic, behavioural, medical, and environmental factors.
For example, young adults, individuals recovering from sleep debt, and those with illnesses may require more than nine hours of sleep per night. On the other hand, it is rare for anyone to need fewer than six hours of sleep to function properly. However, some people might claim to feel fine with limited sleep, but scientists believe it is more likely that they have become accustomed to the negative effects of reduced sleep.
The amount of sleep we need each day also varies throughout our lives. For instance, the recommended amount of sleep for children depends on their age.
While the precise biological mechanisms underlying sleep needs require further scientific investigation, it is clear that adequate sleep duration is crucial for maintaining optimal health. Sleeping less than seven hours a night has been associated with an increased risk of health issues. Therefore, it is essential to consult a healthcare provider if you are concerned about the quantity or quality of your sleep.
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It is a myth that you can train your body to need fewer than 7 hours of sleep
It is a myth that you can train your body to need fewer than seven hours of sleep. Research suggests that for healthy young adults and adults with normal sleep, seven to nine hours is an appropriate amount. While individual variability in sleep needs is influenced by genetic, behavioural, medical, and environmental factors, it is rare for anyone to need fewer than six hours' sleep to function. Although some people might claim to feel fine with limited sleep, scientists think it is more likely that they are used to the negative effects of reduced sleep.
The American Academy of Sleep Medicine and Sleep Research Society recommend that adults sleep seven or more hours per night on a regular basis to promote optimal health. Sleeping more than nine hours per night on a regular basis may be appropriate for young adults, individuals recovering from sleep debt, and individuals with illnesses. However, it is uncertain whether sleeping more than nine hours per night is associated with health risks.
The amount of sleep we need each day varies throughout our lives. For example, children need a different amount of sleep depending on their age. Overall, it is important to obtain adequate sleep duration, good quality sleep, appropriate timing and regularity, and the absence of sleep disturbances or disorders.
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Frequently asked questions
Adults should sleep for between 7 and 9 hours per night.
No, this is a myth. It is rare for anyone to need fewer than 6 hours' sleep to function.
Adults who sleep less than 7 hours a night may have more health issues than those who sleep 7 or more hours.
Sleeping more than 9 hours per night may be appropriate for young adults, people recovering from sleep debt, and individuals with illnesses. For others, it is uncertain whether sleeping more than 9 hours per night is associated with health risks.


































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