Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...
(CNN) — When Dr. Luc Beaudoin was an undergraduate student nearly 40 years ago, he often had trouble falling asleep on Sunday nights and was eager to find a solution. “I thought to myself: If I can ...
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