PVCs and working out

PVCs are a surprisingly common problem. If you've had all the appropriate workup including the echo, stress and occasionally angio (I recommend the CT angio - lots easier), in most cases there is little else to do. Beta blockade with drugs like Toprol may help decrease the symptoms by reducing the "kick" of the beat that follows the compensatory pause. My experience - I stopped taking the toprol because it made me feel sluggish, and did not decrease symptoms. Once convinced there was no organic heart disease and no exercise restriction, I concluded alot of my symptoms were due to anxiety about the premature beats. When I stop worrying about them , they settle. When I exercise, they go away. I have also found that avoidance of caffeine and other stimulants helps decrease the myocardial excitability. I still have occasional bad days where I'll settle into a bi- or tri-geminy like heart rate, but these times are fortunately rare. If I recall correctly, this issue has been discussed here before. Try searching for PVCs for more info.
Hope that helps!