Once in a while i have a fluttering sensation in my chest. Feels like my heart stops for a second and resets. I work out all the time, 40 years old resting heart rate at 60 beats in good shape. When this happens my heart rates goes to like 90. Happens a few times in a day and then not for a while. Had EKG, Eco,Stress test and holter Monitor all showed no problems. Anybody have any insight to this. Someone mentioned could be something called a PVC
Just a scary feeling.