visionary
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The30YardSlant;4651746 said:It's common knowledge in the historical community and has been generlly accepted by medical and scientific professionals since all the longterm sleep cycle studies were published about 10 years ago.
http://www.bbc.co.uk/news/magazine-16964783
For thousands of years human sleep across the globe was divided into a first and second sleep each lasting about four hours because that is the natural sleep rythm we are primed for. The unnatural way we sleep now is the result of societal change, not biological ones. In addition, a study of 10,000 people across Europe about five years ago showwed that 82% of those who sleep longer than four hours at a time awoke at least once and had to fall back to sleep. Sleeping through the night is very rare for people who try and get the "recommended" eight hours all at once.
it is usually not a good idea to get your medical information from the popular media
their job is to sensationalize things not present facts objectively
sure some people will have a differing point of view but "the medical community in general" certainly does not believe we should wake up every four hours
there are many many studies that show that short sleep duration (approx <5 hours) increases the risk of cardiovascular disease, HTN, depression, etc certainly not a good thing
Studies that talk about increased mortality or adverse effects of "long sleep" are typicaly talking about >9 hours of sleep
if i remember correctly, you are a medical student, dont take my word for it, do a pubmed search on "short sleep" and look for yourself