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Arianna Talks Third Metric On CNBC

03/31/2014 11:42 am ET | Updated May 31, 2014

Arianna appeared on CNBC's Squawk Box on Monday to discuss the importance of work-life balance.

She contends that having enough time to unwind, relax and sleep is the key to better job performance.

"If you look at the amount of sleep deprivation, exhaustion and burnout, you see your cognitive functions are not as alert," she said.

She covers many of these issues in her new book "Thrive."

Watch the full video here: