because theyre tired
Sex uses a lot of energy, and if it's your first time, you can "wear out and pass out" from using up too much energy too fast!
If you're tired after sex, go to sleep!
my girlfriend feel tired and sick
move on
Yes sex can make you tired because your moving and moaning during se so yes
Yes!
Pressuring your girlfriend into sex isn't ever a good thing. If your going out with your girlfriend for the sole reason of sex, then she doesn't deserve someone like you.Maybe if you sat your girlfriend down and spoke to her about sex then she might loosen up a bit about sex.:D
Infection can make you tired and reduce your sex drive.
yeah!! it is normal.. i have no further explanation about this because i feel tired....
Because sex is an activity and your working and breathing hard.!
Do hurt her!