Please comment on the following paragraphs if you could, and share your thoughts on the validity of this. I ask only to clarify that if I get "the pump" early in an exercise (say triceps on the first set)...do I then quit when "the pump" is no longer there?
"No one can say for sure why pumping up an undeveloped muscle will make it grow, but experience shows that it does...everytime, always, no exceptions! (all other factors like proper food and rest being equal, of course). Achieving a pump requires strict attention to timing.
Filling up your muscles with extra blood is like filling up a bucket with a hole in the bottom. Fluid has to flow into the vessel bottom at a faster rate than flows out of it. That means you can't take a break and start socializing while in the middle of working toward a pump.
Work with
maximum intensity until you achieve a pump. Then, when you can't get it pumped any more, QUIT EXERCISING that muscle. Nothing deflates a pump quicker than over-exercising."