India, May 9 -- Recently, Delhi-based policy researcher Sneha Sinha, was caught off guard when her smartwatch alerted her of an "abnormally high" heart rate. "As an avid traveller, I hike in high-altitude mountain regions above 15,000-16,000 feet where oxygen levels are often low," shares Sinha, asserting that she did not have pre-existing medical conditions. "I tried deep breathing, hoping it would get resolved. When it persisted for over 1.5 hours, the ECG indicated the onset of Atrial Fibrillation (AFib). I then decided to seek medical attention," she adds, explaining that the doctors had described her situation as a "close call"....