Learn more about health with this collection
How to strengthen your willpower
How to overcome temptation and distractions
The role of motivation in willpower
Early riser or night owl
It is not genetics that determines whether you are an 'early riser' or an 'evening owl'. It is mostly habitual and environmental.
Early research found a connection between night owls and developing schizophrenia later in life. On average, owls also have lower wellbeing and are more likely to develop depression. It could be that owls are experiencing constant jet lag, which may put their bodies under stress.
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Some people need less sleep
Past research found that carriers of a particular gene slept for about 2 hours less than non-carriers. They also found short sleepers who did not carry this gene but had another mutation that appeared to be linked with short sleep.
Natural short sleepers don't seem to suffer health problem...
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The reason for dreaming
- One theory is that dreaming helps with sleep's memory-processing function. During sleep, the brain sorts through information gathered during the day, then decides what to keep and what connections to make between new information.
- Another theory is that drea...
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We don't know how sleep evolved
- Research has linked sleep with memory processing, emotional stability and even cleansing.
- Most animals have their own circadian rhythm, or body clock. Even the cells in the body have a rhythm, so it's vital for organisms to have a way to sync these.
Perhaps sleep aros...
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