>Seven hours of sleep per day was associated with the highest cognitive performance which decreased for every hour below and above this sleep duration.https://pmc.ncbi.nlm.nih.gov/articles/PMC8894343/>People who sleep for seven hours a night live longesthttps://pmc.ncbi.nlm.nih.gov/articles/PMC1172056/>7 hours of sleep associated with the lowest all-cause mortality riskhttps://www.nature.com/articles/srep21480
>>77218485>association in real life conditions>proving anythingpick one dumbass
>>77218485How tf is 3 hours comparable to 8 hours on this chart?
>>77218541ThisWhat a retarded chart
>>77218485>people in poor health need to sleep longerWoah. Who could have imagined something like this?
>>77218541because the only people who regularly sleep 3 hours have the right genes for less sleep
>>77218541Thatcher used to sleep 4 hours a night and she lived to be 87
>>77218485I sleep 7 hours by sleeping 3.5 hours, waking up and being awake for around an hour and sleeping another 3.5 hours after that
>>77218485This is probably correlation not causation. People needing 9 hours sleep probably have a medical issue.
>>77218485Yeah because many people who sleep a lot more have oftentimes a underlying issue or stress or are depressive or whatever. This study is so skewed and bad.
>>77218485Sleepchad here
