I thought I would post this in case it might help someone else.
I have suffered from some pain in my left knee for almost a year. I first experienced it in a very bad way when I was hit playing soccer. Most of the pain was in the area just beneath and to the right of the knee cap. Though at times the whole knee hurt.
I have tried everything from switching up exercises, single leg work, stretching and foam rolling - even doing nothing but normal activity for two weeks. The pain never went away and was pretty much always constant. After a heavy squat day it would be worse and swollen. It got to the point to where I started to notice a large imbalance in strength between my legs.
I read about Dog Crap training and the extreme stretching caught my interest as a method for strength and hypertrophy. All along I thought if the muscles there were stronger the pain would go away. In any case I tried the extreme stretching recommendation for my legs.
Right afterward the pain was gone. returned slightly a few days later. I have been doing extreme stretching for almost three weeks now and the pain is almost imperceptible and the strength in my left leg is quickly returning to the levels of my right leg.
So - there is my two cents and my endrosement of extreme stretching for fixing knee problems. I don’t understand how it fixed it or what was fixed but - it is fixed.