"Could the ring predict COVID-19? Yes, the researchers found. The ring picked up signs the participants may have been infected on average 2.75 days before they tested positive, according to the study."
"Specifically, these analyses replicated prior results showing that daytime self-reported body temperature was associated with greater depressive symptoms and build on one prior study showing that the asleep-awake body temperature difference was more than twice as large among controls relative to individuals with depression,"
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