If you're a very heavy sleeper, you already know a regular alarm clock usually doesn't get the job done, and phone alerts or easygoing sunrise alarms don't rouse those who are deep in an REM cycle, ...

Here’s which one actually fixed my sleep schedule as a chronic night owl with terrible sleep habits.

Sunrise alarm clocks use light to wake you up gradually in the morning. Shop expert-recommended sunrise clocks from top brands like Hatch, Philips, Casper and more.

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