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Everyone, from little children, through teens and young adults to elderly, belongs to one of the ‘chronotypes’. You can be a more or less extreme lark (phase-advanced, tend to wake up and fall asleep early), a more or less extreme owl (phase-delayed, tend to wake up and fall asleep late). You can be something in between – some kind of “median” (I don’t want to call this normal, because the whole spectrum is normal) chronotype.
Navigated from Scientific American
If you’ve ever pulled an all-nighter before a big exam or presentation, you’re probably familiar with that frustrating feeling of brain fog, of trying to remember a detail that’s just out of reach. It turns out you probably should’ve followed that age-old advice to sleep on it.
Full story at GOOD
Even though the data around productivity has proved pretty remorseless, humans have found the message hard to accept. It seems so logical that two units of work will produce twice the output. Logical but wrong.
We don’t all have the same sleep schedule, and this becomes problematic when sharing a bed. This is why LARK has devised a silent alarm that you wear around your wrist while sleeping so you’ll be woken up gently without disturbing your partner. As an added bonus, it’ll track your sleeping patterns and provide you with relevant data as well.
Navigated from Lifehacker
The first productivity studies were conducted by Ernst Abbe at the Zeiss lens laboratories in the 1880s. They indicated what every other productivity study has shown since: that, up to around 40 hours a week, we’re all pretty productive but, after that, we become less able to deliver reliable, cost-effective work. Why?