Break it baby. As long as I don't get a tongue fracture. I had to not stretch my tongue very far for 3 weeks back in the 80's. Doc said i stretched it out to far and split the skin under it. He wasn't stupid either. He knew how I did it too.
Probably not a good study. How many weren't properly lubed. How many "big gals" just plop their big ass down on it without working it in first? Lots of other variables.