I think one of the main reasons why my girth is more on the lower side of average is because my CS does not fully engorge when erect. I have seen many pictures here where the CS is fully engorged and sticks out from the bottom, where with me it does not. I am currently between 4.75”-4.8” EG and I really think that if i got full engorgement of the CS I could easily be 5” EG. Is there any exercise I can do to work? And also is this normal?