A man from Westchester, New York was rushed to a hospital last month when his Apple Watch alerted him to a dangerously fast heartbeat.

That notification helped save his life, doctors said.

William Monzidelis, 32, was working at his family’s bowling alley in the Bronx when he became dizzy and had unexplained bleeding, NBC New York reported. After tracking his alarmingly fast pulse, the Apple Watch alerted him to seek medical attention.

As Monzidelis’ mother drove him to the hospital, he began hemorrhaging and having seizures in the car.

Doctors in the emergency room soon discovered that Monzidelis had an ulcer that had ruptured. Due to this, he needed a blood transfusion before he could even undergo surgery.

Since Monzidelis was young and had no known prior medical problems, doctors said he might have waited until it…