Actually shutdown is the shutdown of the hpta- which produces testosterone- not semen
Although Im pretty sure semen production is lowerd too when one is shutdown
Symptoms can include- depression, lethargy, muscle loss, no sex drive things to this nature
I am in my 7th day of pct right now- I still have no sex drive (Expected until about week 3 maybe after pct as I am taking clomid which can suppress libido) I do not have any other symptoms of shutdown sooo GREAT SUCCESS!