Hey folks, I've been following along with this [Molding Mobility]() and [Starting Stretching]() video for a year on/off. There's one stretch in particular I don't understand - the external rotator stretch [4 minutes into the video.]() ([Additional video]()). &#x200B; What am I supposed to be feeling when doing this? How do I do this stretch right? &#x200B; Additional side questions: 1. backbend progression in Starting Stretching - I'm supposed to feel muscle fatigue doing these right? As in "wow this is hard to hold up". 2. any simple/general recommendations on routines or stretches that you think are vital to add in or remove.