Sleep
Wrist Temperature Sleep Tracking
Overnight wrist temperature trends proxy sleep quality, cycle phase, and early illness signals on supported wearables.
Wrist temperature sleep tracking uses overnight skin temperature deviation from your baseline—on Apple Watch and similar devices—as a proxy for sleep stages, cycle timing, and illness onset. Spikes can precede menses, infection, or alcohol; dips often align with better recovery nights.
Interpret trends, not single nights.
Common questions
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Does wrist temperature replace sleep studies?
No—it is a convenient trend tool. Suspected sleep disorders still need clinical evaluation, not consumer wearables alone.
Related terms
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