At a bachelor party two years ago in South Lake Tahoe, California, a tech worker who we’ll call Owen glanced down at his Fitbit in between snorting lines of cocaine. He noticed his heart rake had spiked to 150, an abnormally high level considering he’d been sitting for hours.

“My heart rate only gets to 150 if I’m running, like really intense physical activity,” said Owen, who agreed to share his story on condition that we not use his real name. “If I’m in a really stressful work meeting, I might get close to 100 or 120.”

CNBC