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Tom’s Guide
Tom’s Guide
Technology
Diana Kelly Levey

Light sleep is just as important as deep — this sleep expert explains why

Brain
Woman sleeping next to a window in sunlight.

Light sleep makes up a significant portion of our rest but the term might cause alarm in some if they think they’re getting too much “light sleep” and not enough “deep sleep.”

Sleep trackers label it vaguely, but what does light sleep actually do for the body and mind?

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