I trained the 531 deep squat program for a year. I went from 190 lb max to 310 lb max. I had no muscle soreness, my energy was good, and my mood was fine. Then, suddenly, the aches started, fatigue set in, sex drive vanished, and my mood was sh@t.
I did not "listen to my body", so I kept training; consequently, my power vanished, and the aches turned into constant pain. Now I am waiting until all the pain is gone. Then I will start training light sets of 8.
What shocked me was how quickly the decline started.