Stretching between the sets?
I read on some places that if you "volume-stretch", that is stretching 15-30 secs between the sets throughout the workout, you'll have a larger "muscle-faschia" or something like that, and that its very good to do that for best muscular development. It was also stated that the old pro bodybuilder Tom Platz did it that way for especially his legs, that he made easy 10-rep deep squats with 660 lbs and then did stretching between all of his sets.
Is this necessary? What do you guys think about stretching between the sets?