What is night fall?
Semen comes out when you sleep because of sexual feelings
. Normally every human being get dreams of sex orelse even when you wake up (concious) in day time also when you have sexual thoughts then semen comes out. Some people don't Mastrubate because of there busy schedule so semen is stored for a longer time, so whenever you thinking about sex it's comes outside automatically. For example when your urinary bladder is full then you will get a sensation to pass urine then automatically you will pass urine, like that semen also comes out as night fall.
It's not a disease, don't worry.
to cure premature ejaculation
pump the body with essential vitamins
and minerals and boost sex drive.
-onions & garlic
-beans & mushrooms.