Agreed. And when a person is new to training it's wisest to err on the side of caution because it takes time to learn how the body feels when it's uncomfortabl

Agreed. And when a person is new to training it's wisest to err on the side of caution because it takes time to learn how the body feels when it's uncomfortable vs when it's injured. I should have been more clear in my response that when I say "don't fucking quit" that "...just because you're uncomfortable" is implied. The 100 chinups from the article is a pretty bad example, candidly, of something to be powering through, especially, if you're not already in decent condition and have that sense of hurt vs injury. The degree of discomfort could become so high that it masks the injury signals from the structure of the shoulder.