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A week in the 5 a.m. club

Malte Rohwer-Kahlmann
February 11, 2020

Whether it's checking off your to-do list while the rest of the world sleeps or reading a book in 15 minutes, apps and life hacks promise to make you happier and more productive. But do they work?

https://p.dw.com/p/3UxoN