I don't know, I'm just saying that in my case I waa able to press a beast for a single. I did phases one and two of "Strong" and made my way up to a double 44 kg press for a single. I then attempted a beast press and it was a no-go! It eventually did come back when I incorporated more single arm presses. In my case I assume specificity was needed. I mean no disrespect but I think sometimes folks don't appreciate single bell work with regards to pressing. I find I get just as strong from a single bell, possibly due to the extended time under tension......however it is not my intention to stir up scientific arguments or the like, just sharing some experiences.