Back in 06 I had some chest pains and I found out I had an Incomplete Right Bundle Branch Block. I had no idea what this was and I became so worried about it. I had an echo done, stress test and even wore a holter monitor for a day, and they told me all was normal, but I still worry sometimes, is a bundle branch block harmless because I have wierd feelings sometimes in my chest. I also am a weight lifter, and enjoy running. Its always in the back of my mind, am I safe to do these things. Its been 5 years and im worried if something might of changed and it got wrose. I workout up to 5 days a week, I just want to know im safe, or should I slow down a bit.