No heavy weights and no sets to failure.
I think this this statement is key. I lifted heavy for about 25 years, despite advice not to. When I say heavy, I mean 6 to 10 reps to failure with about 285 on bench for example. Regardless of your total strength, cardiologist will all tell you it is bad juju to strain on your last rep. That kind of sucks since the last rep is your money rep; that is when you get your maximum muscle breakdown.
The valve specialist explained it this way, when an athlete strains with heavy weights, it increases your blood pressure to massive amounts, and can cause vascular damage, heart muscle damage, and most importantly destroy your valves. The valve at the most risk when lifting is the aortic.
I know most here want to save the ones we have left, and not destroy the nice new ones. I have asked this same question of a half dozen specialist, and they all say the same thing. DON'T DO IT!
If you would like to improve your muscle definition, use light weight with high reps, and do not blow out a testicle on the last rep. I have been using 25lb dumbbells on the bench, and had great result. I can see muscles forming under that fat layer:tongue2:
Before you know it, I will look like this guy.
Try to get that taste out of your mouth:angel:,,,, sorry about that, but we all needed a little persepctive.