Cart is empty Millions of people now start their day with a number—a “readiness” score, a “body battery”” level or a measure of “strain””—delivered by the wearable device on their wrist or finger. But how much trust should we place in these scores?
Millions of people now start their day with a number—a “readiness” score, a “body battery”” level or a measure of “strain””—delivered by the wearable device on their wrist or finger. But how much trust should we place in these scores?
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