So you’re perfectly healthy, you eat well and exercise, but can you be sure your heart is healthy? A fib, short for atrial fibrillation impacts, 3 to 6 million people according to the CDC. These people could be anyone: overweight or thin, young and old. Another 3 million people out there have A Fib but don’t know it. Justin Chickles of Mobile Sense Technologies wants to find those people using a technology already on your wrist: a smartwatch.