Currently taking 500 Test E a week. Feel abnormal heart beats/skips, heart seems to stop for brief second and then pound and restart. I've noticed this occurs weather I'm on or off gear. Although while on, it seems to increase in frequency. Went to the doc, had tests run, had abnormal EKG. So had me wear a holter monitor, it came back abnormal. So then he sends me for stress test and ultrasound of the heart. Both were NORMAL! So he says you could just have high stress, so I ask him, stress that causes my heart to do this all day every day? What the "F", btw I've seen two different doctors and they both told me the same thing. They both told me it's what is called PSVT and many people have it and not to worry about it.