Like I said, I have gained 40 lbs (way pre pe) and saw no differences in my nbp length (i’ve always been a measurer lol).
As far as studies, especially dick length studies, very few use bp measurements that I have seen. I think thunder showed me one which if i remember correctly had errors in it.
All penis length and size studies measure from the base - not from the bone.
Lets take the hint.
There is too much variance in bp measuring due to variance in the area between base and bone on the same person and amongst other people.