Originally Posted by Allen Yeh
I've done it 3 total times since it was posted and while it is getting less awful it is still awful.
For me, any quad stretching is difficult and painful. I can't even hold a quad stretch for 30 seconds without having to take breaks. However, much like your shoulder. I have noticed that repeating the stretch often seems much less awful than previous attempts, so it's obviously working. It's just hard to reverse years of abuse in a few sessions.