A 79-year-old veterinarian from Waco, Texas has credited the Apple Watch for saving his life, after the device's heart rate monitor notified him of atrial fibrillation. Dr. Ray Emerson received a notification from his Apple Watch saying that it had noticed an irregular heartbeat, CBS Austin reported recently. The notification of an irregular heart rhythm and potential atrial fibrillation is what prompted him to head to his doctor where he ...