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This is built on the premise that the modern 8 hour night is settled science. To my knowledge this isn't the case. I'm not saying that depriving yourself of sleep when you're tired is good, but I'm not so sure this should be taken with more than a grain of salt.

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> This is built on the premise that the modern 8 hour night is settled science.

What do you mean by this? Urging people to sleep enough is not really a new and untested concept.

Is there a strong reason to think that frequently sleeping <8 hours is unlikely to cause harm? I think it would still be prudent to give all the studies in the article some consideration.

Science is pretty conclusive that lack of sleep (less than 7hr/night) increases risk for many serious conditions. The part we don’t really know is why it’s the case.

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