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There's a right way to wear your Apple Watch - and it affects your data

ID: 42fca5bc-69cf-59b2-928d-0c6513769573

STIX ID: report--42fca5bc-69cf-59b2-928d-0c6513769573

Feed Name: ZDNet Security

Date Published: 2026-04-20

Date Updated: 2026-04-26

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This ZDNET article explains that smartwatch sensor fit and band tightness significantly affect heart-rate and workout data accuracy, describes how optical (green-light) sensors measure blood flow, and advises wearing the Apple Watch comfortably tight and just above the wrist bone during exercise for the most accurate readings.

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