This is why a lot of this is very individual. Tom found what worked for him and grew the most famous pair of legs in bodybuilding. A lot of what is in this video is Platz at the end of a set where he would keep moving the weight as much or as little as his muscles would allow. He really burned his muscles out! I think his saving grace was that he stretched a lot. I'm sure that helped keep him injury free over the years. Most bodybuilders I know don't really stretch before, during or after training.