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People are using Fitbits and Apple Watches to monitor their heart rate when binging on drugs

Christina Farr

Some people are using activity trackers that monitor heart rate when they use illicit drugs. 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 FIT in between snorting lines of cocaine. "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.