11:13AM on June 13, 2012
The vagina is a muscular tube that conforms to whatever is inside it. When there's nothing inside the vagina, its walls touch each other, so it is closed in on itself. Your vagina may remain in its aroused state immediately after sex, but it will return to its tight state shortly. Having sex doesn't decrease the muscle tone of your vagina. Sex should increase the muscle tone of your vagina since this is a form of exercise. You can have sexual intercourse every day for a year and it still wouldn't change a thing. Similarly, abstaining from sex for a long time doesn't make your vagina tighter. The only thing that makes your vagina tighter is your state of arousal.