WFR Explains

Which sleep problem sounds more like your night?

Trouble falling asleep and trouble staying asleep are two different problems, and each has its own explanation.

These patterns follow how the National Heart, Lung, and Blood Institute describes trouble sleeping, and Cleveland Clinic names falling-asleep and staying-asleep insomnia as separate types — not a WFR invention, and not a diagnosis. Timelines are illustrative: solid line asleep, open line awake.

What the research found

Broken nights were linked to more lost work time.

$4,328 vs. $3,000

Estimated yearly lost-wage costs per employed adult: people reporting middle-of-the-night awakenings vs. matched people without insomnia, in a 2011 U.S. survey. An association in self-reported data, not proof the awakenings caused the gap.

Source: Nature and Science of Sleep, 2014 (peer-reviewed; funded by Purdue Pharma)

Start with the problem. Show the evidence. Say what isn't known.

WFR guides start from a specific thing readers notice and explain what the research does and doesn't support. When WFR may earn a commission from a link, the page says so.

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