How to Survive the Workday When You're Sick, Tired, or Just Not Feeling It
Hubspot Sales
NOVEMBER 16, 2017
In 2005, Karnazes ran 350 miles -- without stopping. Your levels of cortisol (a natural chemical that makes you feel awake and alert) are typically spiking around 8 to 9 a.m. During the grueling 81 hour and 44 minute run, he faced extreme temperatures, the loss of five toenails, and sleep deprivation.
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